Jon T. Hougen

Q: What Schools Are Affiliated With Jon T. Hougen

Jon T. Hougen is affiliated with the following schools: National Tsing Hua University, Harvard University, National Yang Ming Chiao Tung University, University of California, Berkeley, California Institute of Technology, Stanford University

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Jon T. Hougen

Chemistry

#2194

World Rank

#3067

Historical Rank

#690

USA Rank

Organic Chemistry

#320

World Rank

#386

Historical Rank

#84

USA Rank

chemistry Degrees

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Chemistry

Jon T. Hougen's Degrees

PhD Chemistry University of California, Berkeley
Masters Chemistry Stanford University

Why Is Jon T. Hougen Influential?

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According to Wikipedia, Jon Torger Hougen was an American spectroscopist. Education and career Hougen finished his undergraduate degree at the University of Wisconsin in 1956. He obtained his Master's and doctoral degrees at Harvard University. He worked at Harvard University under the research direction of William Moffitt and William Klemperer. He started his career in 1960 as a Postdoctorate Fellow at the National Research Council of Canada in the Molecular Spectroscopy group of Gerhard Herzberg. He joined the staff at NRC in 1962 and supervised Postdoctorate Fellows J.K.G.Watson and Philip Bunker. In 1967 he joined the National Bureau of Standards . He started there as a member of D.R. Lide's Microwave and Infrared Group. Later, he was the chief of the Molecular Spectroscopy Section. In 1984, he was named a senior research fellow. For a year, he served as acting chief of the Molecular Physics Division. After retiring in 2001, he continued his research as a NIST scientist emeritus.

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Jon T. Hougen's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

The labeling of parity doublet levels in linear molecules (1975) (683)
The vibration-rotation problem in triatomic molecules allowing for a large-amplitude bending vibration (1970) (511)
Classification of Rotational Energy Levels for Symmetric‐Top Molecules (1962) (334)
Rotational Energy Levels of a Linear Triatomic Molecule in a 2Π Electronic State (1962) (263)
ANOMALOUS ROTATIONAL LINE INTENSITIES IN ELECTRONIC TRANSITIONS OF POLYATOMIC MOLECULES: AXIS-SWITCHING (1965) (230)
The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules (1970) (226)
Selection Rules and Intensity Calculations for a Cs Asymmetric Top Molecule Containing a Methyl Group Internal Rotor (1994) (219)
Angular Momentum Theory for Diatomic Molecules (1975) (210)
Recommended conventions for defining transition moments and intensity factors in diatomic molecular spectra (1980) (176)
Classification of Rotational Energy Levels. II (1963) (163)
Torsion–rotation global analysis of the first three torsional states (νt = 0, 1, 2) and terahertz database for methanol (2008) (131)
New measurements of microwave transitions in the water dimer (1987) (130)
ROTATIONAL ENERGY LEVELS OF STATES AND INTENSITIES IN TRANSITIONS: APPLICATIONS TO SOME HEAVIER HYDRIDES (1967) (124)
A GROUP-THEORETICAL TREATMENT OF ELECTRONIC, VIBRATIONAL, TORSIONAL, AND ROTATIONAL MOTIONS IN THE DIMETHYLACETYLENE MOLECULE* (1964) (112)
Infrared and microwave investigations of interconversion tunneling in the acetylene dimer (1988) (108)
A GENERALIZED INTERNAL AXIS METHOD FOR HIGH BARRIER TUNNELING PROBLEMS, AS APPLIED TO THE WATER DIMER (1985) (99)
ROTATIONAL STRUCTURE OF SINGLET–TRIPLET TRANSITIONS IN NEAR SYMMETRIC TOPS (1964) (99)
Reinterpretation of Molecular Beam Hyperfine Data for 14NH3 and 15NH3 (1972) (91)
Internal Rotation and Spin Conversion of CH3OH in Solid para-Hydrogen (2006) (85)
A new torsion-rotation fitting program for molecules with a sixfold barrier: Application to the microwave spectrum of toluene (2010) (85)
Infrared Spectra of Gaseous Transition‐Metal Dihalides (1962) (79)
Perturbations in the vibration-rotation-torsion energy levels of an ethane molecule exhibiting internal rotation splittings (1980) (78)
Summary of group theoretical results for microwave and infrared studies of H2O2 (1984) (76)
Double group considerations, Jahn-Teller induced rovibronic effects, and the nuclear spin-electron spin hyperfine Hamiltonian for a molecule of symmetry C3v in an electronic 2E state (1980) (73)
The Third and Fourth Torsional States of Acetaldehyde (1996) (73)
Analysis of high resolution fourier transform and diode laser spectra of the ν9 band of ethane (1983) (72)
Application of Ligand Field Theory to the Electronic Spectra of Gaseous CuCl2, NiCl2, and CoCl2 (1961) (71)
Analysis and fit of the Fourier-transform microwave spectrum of the two-top molecule N-methylacetamide (2004) (63)
A ROTATIONAL HAMILTONIAN FOR THE GROUND VIBRATIONAL STATE OF HYDRAZINE (1981) (62)
Far-infrared spectrum and ground state constants of methyl amine (1987) (61)
Group theoretical treatment of the planar internal rotation problem in (HF)2 (1985) (59)
The electronic emission spectrum of triatomic hydrogen. IV. Visible bands near 5800 Å and infrared bands near 3950 cm−1 (1982) (58)
Ground and first excited torsional states of acetamide (2004) (57)
Fermi Resonance in Linear Triatomic Molecules in Π Electronic States (1962) (57)
Global Fit of Rotational Transitions in the Ground Torsional State of Methanol (1995) (55)
A fitting program for molecules with two inequivalent methyl tops and a plane of symmetry at equilibrium: Application to new microwave and millimeter-wave measurements of methyl acetate (2011) (52)
Analysis of the laser magnetic resonance spectrum of HO2 (1975) (52)
Theoretical Interpretation of the Zeeman Effect in the Near‐Ultraviolet Bands of CS2 (1964) (50)
Vibronic and Rotational Energy Levels of a Linear Triatomic Molecule in a 3Π Electronic State (1962) (50)
Vibronic interactions in molecules with a fourfold symmetry axis (1964) (50)
Rotational energy levels and line intensities for 2S+1Λ-2S+1Λ and 2S+1(Λ ± 1)-2S+1Λ transitions in a diatomic molecule van der Waals bonded to a closed shell partner (1989) (48)
The application of extended permutation-inversion groups to internal rotation of a symmetric rotor top in a symmetric or asymmetric rotor molecule (1983) (48)
VIBRATIONAL MOTIONS IN DIMETHYLACETYLENE. (1965) (48)
Rho-axis-method Hamiltonian for molecules having one methyl rotor and C1 point-group symmetry at equilibrium (2003) (47)
Reinvestigation of the Microwave Spectrum of Acetamide (2001) (46)
Electronic Raman Effect in Pr 3+ Ions in Single Crystals of PrCl 3 (1963) (45)
On the physical interpretation of torsion-rotation parameters in methanol and acetaldehyde: Comparison of global fit and ab initio results (1999) (44)
Atlas of the I2 Spectrum from 19 000 to 18 000 cm−1 (1977) (44)
Molecular-beam optothermal spectrum of the OH stretching band of methanol (1991) (42)
The rotational spectrum of the ground state of methylamine (2005) (42)
Microwave spectrum of methyl amine: Assignment and analysis of the first torsional state (1989) (41)
Coordinates, Hamiltonian, and Symmetry Operations for the Small-Amplitude Vibrational Problem in Methyl-Top Internal-Rotor Molecules like CH3CHO (1997) (40)
P‐type doubling in the infrared spectrum of NO–HF (1990) (40)
Direct spectral evidence of single-axis rotation and ortho-hydrogen-assisted nuclear spin conversion of CH3F in solid para-hydrogen. (2008) (39)
Far-infrared spectrum of methyl amine: Assignment and analysis of the first torsional state (1988) (38)
THE ROTATIONAL ENERGY LEVELS OF DIATOMIC MOLECULES IN 4Σ ELECTRONIC STATES (1962) (36)
The ground torsional state of acetaldehyde (1991) (36)
The Ground and First Excited Torsional States of Acetic Acid. (2001) (35)
Torsional Splittings in Small-Amplitude Vibrational Fundamental States of Methanol-Type Molecules. (2001) (34)
Interpretation of Molecular‐Beam Radiofrequency ortho–para Transitions in Methane (1971) (34)
Spectra of the ammonium radical: The Schuster band of ND4 (1983) (34)
Linestrengths of Torsion–Rotation Transitions of Methanol forJ≤ 22,K≤ 14, and υt≤ 2 from Hamiltonian-Based Calculations (1999) (34)
Nuclear Spin Conversion in Molecules (2005) (33)
The effects of vibration-rotation interaction on the quadrupole hyperfine structure of molecular rotational levels (1984) (33)
Energies of, and Transition Intensities Associated with, the Rotational Levels of Nearly Degenerate A1A2 Pairs of Vibronic States in Molecules of Symmetry C3v (1963) (32)
The ground and first torsional states of acetaldehyde (1992) (32)
Anharmonic Corrections in Triatomic Molecules Exhibiting the Renner Effect (1963) (32)
The assignment of molecular infrared spectra from a laser magnetic resonance spectrometer (1975) (30)
A fitting program for molecules with two equivalent methyl tops and C2v point-group symmetry at equilibrium: Application to existing microwave, millimeter, and sub-millimeter wave measurements of acetone (2013) (30)
Far infrared laser magnetic resonance spectrum of CH (1978) (29)
The torsional-wagging tunneling problem and the torsional-wagging-rotational problem in methylamine (1985) (29)
Symbols for fine and hyperfine structure parameters (IUPAC Recommendations 1994) (1994) (29)
Avoided Crossings in Bound Potential‐Energy Curves of Diatomic Molecules: Derivation and Analysis of the Vibrational Hamiltonian (1968) (29)
Strategies for advanced applications of permutation–inversion groups to the microwave spectra of molecules with large amplitude motions (2009) (28)
Analysis of the microwave spectrum of hydrazine (1982) (28)
Conformational analysis of the jet-cooled peptide mimetic ethylacetamidoacetate from torsion-rotation spectra (2003) (28)
Spectroscopic analysis of the d1Σ+→a1Σ+ and d1Σ+→b1Π green band systems of XeO (1979) (27)
NORMAL MODES, CORIOLIS COUPLING, AND CENTRIFUGAL DISTORTION IN MOLECULES WITH NEARLY FREE INTERNAL ROTATION: CH3—C≡C—CH3 AND CH3—C≡C—SiH3 (1967) (27)
Symmetry beyond point groups in molecular spectroscopy (1986) (24)
TRIPLET-STATE ROTATIONAL ENERGY LEVELS FOR NEAR-SYMMETRIC ROTOR MOLECULES OF SYMMETRY C2v, D2, AND D2h (1967) (23)
Hydrogen migration tunneling effects in the rotational and vibrational spectrum of protonated acetylene C2H3 (1987) (22)
Anomalous Faraday Dispersion of O2 (1960) (21)
Dynamical structure of peptide molecules. (2006) (19)
Influence of the ac Stark effect on multiphoton transitions in molecules (1989) (19)
Reinvestigation of the microwave spectrum of 2-methylmalonaldehyde (2008) (19)
Far-infrared laser magnetic resonance spectrum of CH2F (1977) (19)
Laser Magnetic Resonance Spectra of 14NO2 and 15NO2 near 1600 cm−1 (1975) (19)
Assignment, fit, and theoretical discussion of the ν10 band of acetaldehyde near 509 cm−1 (2008) (18)
Application of Permutation–Inversion Group Theory to the Interpretation of the Microwave Absorption Spectrum of Dimethyl Methylphosphonate (2002) (18)
EXTENDED PERMUTATION-INVERSION GROUPS FOR SIMULTANEOUS TREATMENT OF THE ROVIBRONIC STATES OF TRANS-ACETYLENE, CIS-ACETYLENE, AND VINYLIDENE (2011) (18)
An interesting example of Hund's coupling case (c) in HgAr+ (1972) (18)
Unusual internal rotation coupling in the microwave spectrum of pinacolone (2015) (18)
A group-theoretical formalism for the large-amplitude vibration-rotation problem in methylamine-d1 (1990) (17)
The Rotation-Tunneling Spectrum of Argon-Acetaldehyde: Theory and Analysis (1995) (17)
A Hybrid Program for Fitting Rotationally Resolved Spectra of Floppy Molecules with One Large-Amplitude Rotatory Motion and One Large-Amplitude Oscillatory Motion. (2015) (17)
Two-dimensional tunneling Hamiltonian treatment of the microwave spectrum of 2-methylmalonaldehyde. (2006) (16)
The use of extended permutation-inversion groups in constructing hyperfine Hamiltonians for symmetric-top internal rotor molecules like H3CSiH3 (1991) (16)
Towards the complete analysis of the rotational spectrum of (CH3)3SnCl (2008) (16)
Notations and conventions in molecular spectroscopy: Part 2. Symmetry notation (IUPAC Recommendations 1997) (1997) (16)
Vibrationally induced nuclear quadrupole coupling in tetrahedral and octahedral molecules (1981) (15)
The vibrational problem in molecules with nearly free internal rotation (1965) (15)
The Isomeric Dithiocyanatotetraaquochromium(III) Ions; their Separation, Spectra and Relative Stabilities1,2 (1957) (15)
Calculation of the Eulerian angles and large amplitude vibrational coordinate corresponding to an arbitrary instantaneous molecular configuration (1971) (14)
Effective Rotation–Pseudorotation Hamiltonian forX3-Type Molecules: Application to theB̃–X̃Transition of Na3 (1997) (14)
Rotational energy surfaces of molecules exhibiting internal rotation (1994) (14)
Torsional Angle Definitions and Linear and Quadratic Force Field Variations along the Torsional Coordinate for CH3OH and CH3CHO (2002) (14)
CALCULATION OF VIBRATIONAL LEVEL POPULATIONS IN MULTIPHOTON ABSORPTION PROCESSES (1976) (13)
Electronic and vibrational Raman spectra of PrC l3 and LaCl3 (1964) (13)
Tunneling splittings in (XY3)2-type dimers (1991) (13)
Torsionally mediated spin-rotation hyperfine splittings at moderate to high J values in methanol. (2016) (13)
Rotational line intensities for singlet-triplet transitions in molecules belonging to the point groups D2h, C2v, and D2 (1971) (12)
A GROUP-THEORETICAL TREATMENT OF VIBRATIONAL, TORSIONAL, AND ROTATIONAL MOTIONS IN CH3—C≡C—SiH3 (1966) (11)
Group-Theoretical Treatment of Tunneling Splittings in the Methanol Dimer (1994) (11)
Symmetry and Fourier analysis of the ab initio-determined torsional variation of structural and Hessian-related quantities for application to vibration–torsion–rotation interactions in CH3OH (2010) (11)
On the physical interpretation of ab initio normal-mode coordinates for the three C-H stretching vibrations of methanol along the internal-rotation path (2013) (11)
Remarks on the signs of g factors in atomic and molecular Zeeman spectroscopy (2000) (11)
Line assignments and global analysis of the tunneling-rotational microwave absorption spectrum of dimethyl methylphosphonate (2003) (10)
The K-rotational labeling problem for eigenvectors from internal rotor calculations: Application to energy levels of acetaldehyde below the barrier (1999) (10)
Internal rotation in 1,4-dimethylnaphthalene studied by high resolution laser spectroscopy (1990) (10)
Microwave study of internal rotation in para-tolualdehyde: Local versus global symmetry effects at the methyl-rotor site (2018) (10)
A microwave study of hydrogen-transfer-triggered methyl-group rotation in 5-methyltropolone. (2010) (10)
Anomalous splittings of torsional sublevels induced by the aldehyde inversion motion in the S1 state of acetaldehyde. (2004) (10)
Observation and analysis of the infrared spectra of O2–HF near 3950 cm−1 and O2–DF near 2900 cm−1 (2002) (9)
On a Vibration‐Rotation Hamiltonian for Bimolecular Collisions Analogous to the Wilson‐Howard Vibration‐Rotation Hamiltonian for Isolated Molecules (1972) (9)
Approximate theoretical model for the five electronic states (Ω = 5/2, 3/2, 3/2, 1/2, 1/2) arising from the ground 3d9 configuration in nickel halide molecules and for rotational levels of the two Ω = 1/2 states in that manifold (2011) (8)
Methane Symmetry Operations (2002) (8)
Notations and conventions in molecular spectroscopy: Part 1. General spectroscopic notation (IUPAC Recommendations 1997) (1997) (8)
Comparison of independently calculated ab initio normal-mode displacements for the three C–H stretching vibrations of methanol along the internal rotation path (2014) (7)
Tabulation of hyperfine splittings in rotational F1 and F2 levels of the ground vibrational state of 12CH4 for J ≤ 20 (1973) (7)
Tunneling splitting patterns in two forms of the methanol-water dimer (1993) (7)
Notations and conventions in molecular spectroscopy: Part 3. Permutation and permutation-inversion symmetry notation (IUPAC Recommendations 1997) (1997) (7)
GLOBAL FIT OF TUNNELING SPLITTINGS IN THE K=0 A-TYPE MICROWAVE SPECTRUM OF THE METHANOL DIMER (1995) (6)
Effective Rotation-Pseudorotation Hamiltonian for X3-Type Molecules in the High-Barrier Limit (1995) (6)
The laboratory spectrum of acetaldehyde at 1 millimeter (230-325 GHz) (1993) (6)
Electronic spectra of molecules with two C3v internal rotors: Torsional analysis of the A˜1Au–X˜1Ag LIF spectrum of biacetyl (2005) (5)
K-scrambling in a near-symmetric top molecule containing an excited noncoaxial internal rotor (2000) (5)
Cross-contamination of the fitting parameters in multidimensional tunneling treatments. (2017) (4)
A modified ladder operator formalism for molecule-fixed components of the total angular momentum operator in linear molecules (1973) (4)
Chapter 7 – Interactions among Electronic, Vibrational, and Rotational Motions∗ (1970) (4)
THE CALCULATION OF ROTATIONAL ENERGY LEVELS USING TUNNELING HAMILTONIANS (2009) (4)
Submillimeter spectrum and analysis of vibrational and hyperfine coupling effects in (HI)2 (2009) (4)
Global Fit of Rotational and Torsional-Rotational Transitions in the Ground and First Excited Torsional States of Methanol (1995) (4)
Reexamination of the C2H3+ microwave and infrared spectra (2011) (4)
Multi-valued versus single-valued large-amplitude bending-torsional–rotational coordinate systems for simultaneously treating trans-bent and cis-bent acetylene in its S1 state (2012) (4)
High-resolution spectroscopy on the a-similar-1b1(0, 6, 0) - x-similar-1a1(0, 0, 0) transition in sicl2 (1989) (4)
Reanalysis of the microwave absorption spectrum of dimethyl methylphosphonate and its internal rotation problem (2007) (3)
Ab initio calculations of torsionally mediated hyperfine splittings in E states of acetaldehyde. (2017) (3)
The Role of Tunneling Models in Analyzing High-Resolution Spectra of Weakly Bound Molecular Complex (1987) (3)
Tunneling splittings in A-BX4 type van der Waals molecules (1992) (3)
Remarks on phase choices for the electronic wavefunctions when carrying out vibronic or rovibronic energy level and intensity calculations for molecules exhibiting a Jahn–Teller effect (2013) (3)
A study of the S1 61 (1A″2) vibronically excited state of sym-triazine by high-resolution UV laser spectroscopy (1991) (3)
Comment on the paper “about the symmetries of the rotation-vibration wavefunction of molecules” (1974) (3)
A simultaneous fit of v = 0 and 1 torsion-wagging-rotational levels of CH3NH2 using a hybrid “tunneling and non-tunneling” Hamiltonian formalism (2020) (2)
NEW TORSION-ROTATION FITTING PROGRAM FOR MOLECULES WITH A SIX-FOLD BARRIER (2008) (2)
Chemistry. Nuclear spin conversion in molecules. (2005) (2)
Hydrogen Migration Tunneling Effects in the Rotational and Vibrational Spectrum of Protonated Acetylene C2H+ 3 (1987) (2)
Towards the complete analysis of the rotational spectrum of ( CH 3 ) 3 (2007) (2)
Analysis and fit of the high-resolution spectrum of the Ã1Au–X˜1Ag LIF spectrum of the two-equivalent-top molecule biacetyl (2009) (2)
On the Use of Time Reversal in Crystal‐Field Problems (1964) (2)
Spin-torsion dominated hyperfine splittings in the first excited torsional state (v = 1) of methanol (2019) (2)
LARGE AMPLITUDE MOTIONS AND INFORMATION TRANSFER ALONG CONJUGATED BONDS: THE CASE OF PARATOLUALDEHYDE (2010) (1)
IUPAC RECOMMENDATIONS FOR NOTATIONS AND CONVENTIONS IN VIBRATIONAL-ROTATIONAL SPECTROSCOPY (1998) (1)
FIR LASER ASSIGNMENTS FOR HYDRAZINE BY FOURIER TRANSFORM SPECTROSCOPY (1994) (1)
AN IMPROVED FIT OF THE MICROWAVE SPECTRUM OF $SO_{2}-O_{2}$ (1998) (1)
The Use of Extended Permutation‐Inversion Groups in Constructing Hyperfine Hamiltonians for Symmetric‐Top Internal Rotor Molecules Like H3C‐SiH3. (1991) (1)
Anomalous Transitions in Two-Level Systems Driven by the AC Stark Effect (2001) (1)
Proceedings of the XIVth Combustion Research Conference (1992) (1)
ELECTRON-SPIN AND TUNNELING EFFUCTS IN THE MICROWAVE SPECTRUM OF $SO_{2}-O_{2}$ (1997) (1)
Spin-Rotation Hyperfine Splittings at Moderate to High J Values in Methanol (2015) (1)
NEW MICROWAVE SPECTRUM AND GLOBAL FIT OF METHYL ACETATE GROUND STATE (2010) (0)
ANALYSIS AND FIT OF THE HIGH-RESOLUTION VISIBLE SPECTRUM OF THE TWO-EQUIVALENT-TOP MOLECULE BIACETYL (2006) (0)
QUASI-LINEAR MOLECULES. (1967) (0)
AB INITIO RESULTS ON COUPLING BETWEEN THE LARGE AMPLITUDE TORSION AND SMALL AMPLITUDE VIBRATIONS IN METHANOL (1999) (0)
APPLICATION OF THE DIABATIC CORRELATION METHOD TO LABELING SPECTRA OF MOLECULES CONTAINING AN INTERNAL ROTOR (2002) (0)
Molecular‐Beam Optothermal Spectrum of the OH Stretching Band of Methanol. (1991) (0)
SPECTROSCOPIC ANALYSIS OF THE D1Σ+ → A1Σ+ AND D1Σ+ → B1Π GREEN BAND SYSTEMS OF XENON OXIDE (XEO) (1979) (0)
MOLECULAR-BEAM OPIOTHERMAL SPECTRUM OF THE OH STRETHCING BAND OF METHANOL. (1991) (0)
An effective-hamiltonian approach to CH5+, using ideas from atomic spectroscopy (2016) (0)
Tribute: Biography of Ronald M. Lees (2009) (0)
CH3 INTERNAL ROTATION IN 9-METHYLANTHRACENE (2019) (0)
HYDROGEN MIGRATION TUNNELING EFFECTS IN THE INFRARED SPECTRUM OF PROTONATED ACETYLENE $C_{2}H_{3}^{+}$ (1986) (0)
The Ground Torsional State of Acetaldehyde. (2010) (0)
THE ASYMMETRIC STRETCHING FREQUENCIES OF $FeCl_{2}, CoCl_{2}, NiCl_{2}$ AND $CoBr_{2}$ (1960) (0)
Reexamination of the C 2 H þ 3 microwave and infrared spectra (2011) (0)
GROUP-THEORETICAL TREATMENT OF SELECTION RULES FOR VIBRATIONAL TRANSITIONS IN MOLECULES EXHIBITING LARGE AMPLITUDE TUNNELING MOTIONS (1989) (0)
A NEW MULTI-STATE VIBRATION-TORSION-ROTATION FITTING PROGRAM FOR MOLECULES WITH A C3v TOP AND Cs FRAME: APPLICATION TO THE ν10 BAND OF ACETALDEHYDE (2018) (0)
APPLICATION OF ROTATIONAL ENERGY SURFACES TO ROTATION-TORSION EIGENFUNCTION LABELING PROBLEMS (1993) (0)
ANALYSIS OF AB INITIO NORMAL-MODE DISPLACEMENT VECTORS ALONG THE INTERNAL ROTATION PATH FOR THE THREE C-H STRETCHING VIBRATIONS IN METHANOL (2012) (0)
AXIS-SWITCHING CORRECTIONS TO THE DUSCHINSKY EFFECT (1991) (0)
COMPETITION BETWEEN TWO LARGE-AMPLITUDE MOTION MODELS: NEW HYBRID HAMILTONIAN VERSUS OLD PURE-TUNNELING HAMILTONIAN (2017) (0)
ACETALDEHYDE SPECTROSCOPY AND GENERIC METHYL-ROTOR IVR QUESTIONS (1993) (0)
FORCE CONSTANT CALCULATIONS FOR MOLECULES WITH FREE INTERNAL ROTATION (1966) (0)
THE FARADAY DISPERSION OF $O_{2}$ (1959) (0)
Dynamical Structure of Peptide Molecules (2006) (0)
THE USE OF HIGH-ORDER EXTENDED GROUPS IN UNSYMMETRIC INTERNAL ROTATION PROBLEMS (1982) (0)
THE LASER ZEEMAN ROTATIONAL SPECTRUM OF $HO_{2}$ (1974) (0)
QUANTUM CHEMICAL CALCULATIONS OF TORSIONALLY MEDIATED HYPERFINE SPLITTINGS IN STATES OF E SYMMETRY OF ACETALDEHYDE (CH3CHO) (2017) (0)
AN ELECTRONIC RAMAN EFFECT IN $Pr^{3+}$ IN SINGLE CRYSTALS OF $PrCl_{8}$ (1963) (0)
ROTATIONAL ASSIGNMENT OF THE FRACTIONATED C=O STRETCHING FUNDAMENTAL OF CH$_3$CHO (2005) (0)
PRAHA2008. The 20th International Conference on High Resolution Molecular Spectroscopy Prague, Czech Republic, September 2–6, 2008 (2009) (0)
APPLICATION OF THE HYBRID PROGRAM FOR FITTING MICROWAVE AND FAR-INFRARED SPECTRA OF METHYLAMINE (2016) (0)
The Laboratory Spectrum of Acetaldehyde at 1 mm (1993) (0)
HUND'S COUPLING CASES AND TETRAHEDRAL SPLITTINGS IN ROTATIONAL LEVELS OF ELECTRONIC $^{2}F_{2}$ STATES IN $ND_{4}$ (1983) (0)
HOW DOES THE STRUCTURE OF METHANOL CHANGE WHEN THE METHYL GROUP ROTATES (1997) (0)
CLASSICAL AND QUANTUM PHASE SPACES FOR A MOLECULE WITH INTERNAL ROTATION (1995) (0)
LOW-BARRIER ROTATION-PSEUDOROTATION HAMILTONIAN AND APPLICATION TO THE B STATE OF $Na_{3}$ (1996) (0)
ANGULAR MOMENTUM LADDER OPERATOR FORMALISM FOR LINEAR MOLECULES (1973) (0)
TWO-TOP TORSIONAL ASSIGNMENTS IN THE $A^{1}A_{u}(S_{1}) - X^{1}A_{g}(S_{0})$ TRANSITION OF BIACETYL $CH_{3}C(=O)C(=O)CH_{3}$ (2004) (0)
A NEW HYBRID PROGRAM FOR FITTING ROTATIONALLY RESOLVED SPECTRA OF METHYLAMINE-LIKE MOLECULES: APPLICATION TO 2-METHYLMALONALDEHYDE (2015) (0)
ABNORMAL REVERSED SPLITTINGS OF TORSIONAL SUBLEVELS INDUCED BY INVERSION MOTION IN THE $S_{1}$ STATE OF ACETALDEHYDE (2003) (0)
Vibration-Rotation Spectroscopy of the Hydrated Hydronium Ions H{sub 5}O{sub 2}{sup +} and H{sub 9}O{sub 4}{sup +} (1992) (0)
THE ROTATIONAL AND VIBRATIONAL ENERGY LEVELS OF LINEAR MOLECULES IN $\pi$ ELECTRONIC STATES (1962) (0)
GROUP THEORY OF DIMETHYL METHYL PHOSPHONATE (2000) (0)
FAR-INFRARED LASER MAGNETIC RESONANCE SPECTRA OF METHYLENE (1979) (0)
A New Torsion-Rotation Fitting Program for Molecules with a Six-Fold Barrier: Application to the Toluene Microwave Spectrum | NIST (2009) (0)
PRELIMINARY RESULTS IN THE MICROWAVE SPECTRUM OF A PEPTIDE MIMETIC: THE ETHYL ACETAMIDOACETATE MOLECULE (2002) (0)
DIABATIC VERSUS ADIABATIC CALCULATION OF TORSION-VIBRATION INTERACTIONS (2013) (0)
FAR INFRARED LASER MAGNETIC RESONANCE SPECTRUM OF $CH_{2}F$ (1977) (0)
ANALYSIS AND FIT OF THE FTMW SPECTRUM OF THE TWO-TOP MOLECULE N-METHYLACETAMIDE (2003) (0)
VIBRATIONAL LEVELS FOR A PAIR OF POTENTIAL CURVES EXHIBITING A SMALL AVOIDED CROSSING. (1966) (0)
VERY HIGH RESOLUTION FOURIER TRANSFORM AND DIODE LASER SPECTRA OF THE $\nu_{9}$ BAND OF $C_{2}H_{6}$ (1981) (0)
FT-MW AND PERMUTATION-INVERSION GROUP THEORETICAL INVESTIGATIONS OF THE MICROWAVE SPECTRUM OF $(CH_{3})_{3}SnCl$ (2004) (0)
ROVIBRONIC ENERGY LEVELS AND INTENSITIES OF ROVIBRONIC TRANSITIONS OF NONLINEAR TRIATOMIC OPEN-SHELL RARE GAS COMPLEXES (1988) (0)
MILLIMETER WAVE SPECTRUM OF ACETAMIDE (2003) (0)
HYPERFINE SPLITTINGS OF METHANOL IN THE FIRST EXCITED TORSIONAL STATE (2018) (0)
Internal Rotation and Intensity Calculation in Acetaldehyde (1992) (0)
MOLECULES WITH A SIX-FOLD BARRIER: MICROWAVE SPECTRUM OF TOLUENE (2009) (0)
GLOBAL MODELLING OF THE FIRST THREE TORSIONAL STATES OF METHANOL ($v_t$ = 0, 1, 2, $J_{max}$ = 30): CH$_{3}$OH AND CH$_3^{18}$OH (2007) (0)
ROTATIONAL ENERGY LEVELS OF A NEAR-SYMMETRIC ROTOR IN A TRIPLET STATE. (1966) (0)
WKB potential well ground states without matching (1988) (0)
NEARLY FREE INTERNAL ROTATION IN PARATOLUALDEHYDE (1999) (0)
English, Science, Foreigners and Referees (1985) (0)
THE THIRD TORSIONAL STATE OF ACETALDEHYDE (1995) (0)
THE WATER DIMER: THEORY AND MEASUREMENTS (1987) (0)
Ernest Davidson Special Issue (2000) (0)
THEORETICAL QUESTIONS ASSOCIATED WITH UTILIZING AB INITIO RESULTS TO AID IN INTERPRETATION OF VIBRATION-TORSION-ROTATION SPECTRA (1999) (0)
Microwave Spectrum of 2-Methylmalonaldehyde: Analysis of the Hydrogen-Transfer and Internal-Rotation Motions (2007) (0)
POTENTIAL REWARDS FROM THE BEGINNING TO THE END OF A SPECTROSCOPIC CAREER DERIVED FROM ATTENDANCE AT A GRADUATE-STUDENT AND POSTDOCTORAL-FELLOW ORIENTED SYMPOSIUM (2010) (0)
HYPERFINE STRUCTURE AND TUNNELING MOTIONS IN HYDRAZINE (1988) (0)
Editorial policy: Some clarifications (1988) (0)
REMARKS ON THE PHASE CHANGE OF THE ELECTRONIC WAVE FUNCTION UPON GOING ONCE AROUND A JAHN-TELLER CONICAL INTERSECTION IN VIBRATIONAL COORDINATE SPACE (2012) (0)
INVESTIGATION OF THE TORSIONAL FAR-INFRARED OVERTONES AND HOT BANDS OF ACETALDEHYDE AND VIBRATIONAL-TORSIONAL-ROTATIONAL INTERACTIONS WITH THE $\nu{10}$ FUNDAMENTAL BAND (1997) (0)
Molecular spectroscopy data needs (2008) (0)
The Future of High Resolution Molecular Spectroscopy (1995) (0)
AB INITIO EXPLORATION OF THE POTENTIAL ENERGY SURFACE OF THE O2-SO2 OPEN-SHELL COMPLEX. (2016) (0)
STUDIES OF ISOTOPICALLY ENRICHED WATER DIMER SPECIES (1988) (0)
THE VIBRATION-ROTATION ENERGY LEVELS OF A QUASI-LINEAR MOLECULE. (1968) (0)
ANALYSIS OF THE 5800 \AA SCHUSTER BAND OF THE $ND_{4}$ RADICAL (1982) (0)
BIOMEMETIC MOLECULES AND INTERNAL ROTOR SPLITTINGS (2002) (0)
ELECTRONIC SPECTRA OF SOME GASEOUS TRANSITION METAL DIHALIDES (1960) (0)
Line Strengths of Torsion-Rotation Transitions of Methanol for J {less than or equal} 14 and vt {less than or equal} 2 From Hamiltonian Based Calculations (1998) (0)
A SIMULTANEOUS FIT OF vt = 0 AND 1 TORSION-WAGGING-ROTATIONAL LEVELS OF METHYLAMINE USING A HYBRID (TUNNELING AND NON-TUNNELING) HAMILTONIAN FORMALISM (2019) (0)
EVIDENCE FOR STATE DEPENDENT DECAY IN SYM-TRIAZINE (1990) (0)
Molecular Spectroscopy (1973) (0)
Annotated bibliography of research carried out from 1993 to 1999 under DoE Award No. DE-IA02-94ER14411: Spectroscopic investigation of the vibrational quasi-continuum arising from internal rotation of a methyl group (2002) (0)
Top-top internal rotation coupling in the microwave spectrum of pinacolone | NIST (2015) (0)
COMPARISON OF INDEPENDENTLY CALCULATED AB-INITIO NORMAL-MODE DISPLACEMENTS FOR THE THREE C-H STRETCHING VIBRATIONS OF METHANOL ALONG THE INTERNAL ROTATION PATH (2014) (0)
Some effects of spin―orbit interaction on rotational levels and rotational line intensities in vibrationally unexcited 2A, 2E, and 2F electronic states of open-shell XY4 molecules (1984) (0)
FAR-INFRARED SPECTRUM OF METHYLAMINE AND THE GROUP THEORETICAL TREATMENT OF ITS LARGE AMPLITUDE MOTIONS (1986) (0)
TORSIONAL AND K-ROTATTIONAL LABELING PROBLEMS FOR EIGENVECTORS FROM LARGE INTERNAL ROTOR CALCULATIONS INVOLVING ONE METHYL TOP (1997) (0)
Ab Initio and Model-Hamiltonian Study of the Torsional Variation of the Three CH Stretching Normal Modes in Methanol (2013) (0)
AN INTERNAL ROTATION PROGRAM FOR MOLECULES WITH $C_{1}$ POINT GROUP SYMMETRY (2001) (0)
MICROWAVE STUDY OF A HYDROGEN-TRANSFER-TRIGGERED METHYL-GROUP INTERNAL ROTATION IN 5-METHYLTROPOLONE (2010) (0)
Spectroscopic investigation of the vibrational quasi-continuum arising from internal rotation of a methyl group. Final report, 1990 - 1993 (1993) (0)
CATASTROPHES IN ROTATIONAL ENERGY SURFACES OF MOLECULES WITH INTERNAL ROTATION (1994) (0)
ANALYSIS OF TUNNELING SPLITTINGS IN THE MICROWAVE SPECTRUM OF THE METHANOL DIMER (1992) (0)
FAR-INFRARED LASER MAGNETIC RESONANCE SPECTRUM OF THE MONOFLUOROMETHYL RADICAL (1978) (0)
Multi-Valued Versus Single-Valued Large-Amplitude Bending-Torsional Coordinate Systems for Simultaneously Treating Trans-Bent and Cis-Bent Acetylene in its S_1 Excited Electronic State (2012) (0)
METHYL TORSIONAL LEVELS IN 9-METHYLANTHRACENE (2007) (0)
Energy levels of Acetaldehyde above the barrier top: Infrared and microwave spectra (1993) (0)
UPDATE FOR USERS OF THE METHANOL DATABASE: RECENT IMPROVEMENTS, REMAINING PROBLEMS, AND MORE COMPLICATED REGIONS (2009) (0)
ROTATIONAL SPECTRA OF MOLECULES CONTAINING THREE METHYL TOPS: A COMPARATIVE STUDY OF (CH$_3$)$_3$GeCl and (CH$_3$)$_3$SnCl (2005) (0)
PROGRESS ON THE ASSIGNMENT AND FIT OF THE LOWEST FUNDAMENTAL BAND OF ACETALDEHYDE $\nu_{10}$, BURIED IN THE TORSIONAL PRECONTINUUM AT $509 cm^{-1}$ (1999) (0)
VIBRATION-ROTATION INTERACTION IN QUASI-LINEAR MOLECULES. (1968) (0)
THEORETICAL TREATMENT OF TUNNELING SPLITTINGS IN THE AMMONIA DIMER (1989) (0)
THEORETICAL STUDIES ON THE TRANSFER OF ROTATIONAL ANGULAR MOMENTUM DURING A BIMOLECULAR COLLISION (1970) (0)
HYPERFINE SPLITTINGS IN v = 0 ROTATIONAL LEVELS OF METHANE (1973) (0)
MICROWAVE AND MILLIMETERWAVE SPECTRUM OF ACETIC ACID (1999) (0)
Ag LIF spectrum of biacetyl (2005) (0)
TORSION-VIBRATION, TORSION-ROTATION, AND VIBRATION-ROTATION INTERACTION CONSTANTS FOR $CH_{3}$OH FROM AB INITIO CALCULATIONS (2004) (0)
A NEW FIT OF THE MICROWAVE SPECTRUM OF 2-METHYLMALONALDEHYDE (2005) (0)
FURTHER PROGRESS IN FITTING 13000 TORSION-WAGGING-ROTATIONAL MW AND IR vt = 0,1 TRANSITIONS IN CH3NH2 USING THE HYBRID (TUNNELLING + INTERNAL ROTATION) PROGRAM (2018) (0)
CROSS-CONTAMINATION OF FITTING PARAMETERS IN MULTIDIMENSIONAL TUNNELING TREATMENTS (2017) (0)
GROUP-THEORETICAL FORMALISM FOR THE LARGE-AMPLITUDE VIBRATION-ROTATION PROBLEM IN $METHYLAMINE-d_{1}$ AND PRELIMINARY ANALYSIS OF THE GROUND-STATE MICROWAVE SPECTRUM (1990) (0)
A NEW PROGRAM FOR NON-EQUIVALENT TWO-TOP INTERNAL ROTORS WITH A C$_s$ FRAME (2009) (0)
REMEASUREMENT OF THE MICROWAVE SPECTRUM OF 2-METHYLMALONALDEHYDE AND ANALYSIS OF THE HYDROGEN-TRANSFER AND INTERNAL-ROTATION MOTIONS (2007) (0)
GLOBAL FIT OF ROTATIONAL ENERGY LEVELS OF THE GROUND VIBRATIONAL STATE OF METHYLAMINE OBTAINED FROM MICROWAVE, FAR-INFRARED PURE ROTATIONAL, AND FAR-INFRARED TORSIONAL BAND TRANSITIONS (1987) (0)
ON IMPLEMENTATION OF A SMALL-AMPLITUDE VIBRATIONAL FORMALISM IN MOLECULES WITH LARGE-AMPLITUDE INTERNAL ROTATION: TORSIONAL ANGLE DEFINITION AND PROJECTED VIBRATIONAL FREQUENCIES (2001) (0)
RAD-3 SUBMILLIMETER-WAVE SEPECTRUM OF ACETALDEHYDE (1992) (0)

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