Huw O. Pritchard
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Chemistry
Huw O. Pritchard's Degrees
- PhD Chemistry University of Oxford
- Bachelors Chemistry University of Oxford
Why Is Huw O. Pritchard Influential?
(Suggest an Edit or Addition)According to Wikipedia, Huw Owen Pritchard was a Welsh-born Canadian chemist who was a Distinguished Research Professor Emeritus at York University.
Huw O. Pritchard'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 Concept Of Electronegativity (1955) (500)
- The Determination of Electron Affinities. (1953) (209)
- The measure of electronegativity (1953) (190)
- Born—Oppenheimer Separation for Three‐Particle Systems. II. Two‐Center Wavefunctions (1967) (92)
- How do diesel-fuel ignition improvers work? (1993) (87)
- Born—Oppenheimer Separation for Three‐Particle Systems. III. Applications (1967) (82)
- Rotation-vibration level energies of the hydrogen and deuterium molecule-ions (1974) (75)
- Photochemical Experiments in Rigid Media at Low Temperatures. II. The Reactions of Methylene, Cyclopentadienylene and Diphenylmethylene (1959) (72)
- Born—Oppenheimer Separation for Three-Particle Systems. I. Theory (1966) (70)
- The Study of Chlorine Atom Reactions in the Gas Phase (1955) (59)
- Thermal decomposition of di-tert-butyl peroxide at high pressure (1968) (48)
- Effect of free-radical release on diesel ignition delay under simulated cold-starting conditions (1990) (46)
- The enthalpy of isomerisation of methyl isocyanide (1977) (46)
- Why atoms recombine more slowly as the temperature goes up (1976) (45)
- The reactions of trifluoromethyl radicals (1956) (41)
- Reaction of nitrogen dioxide with hydrocarbons and its influence on spontaneous ignition. A computational study (2001) (38)
- Studies in energy transfer II. The isomerization of cyclopropane—a quasi-unimolecular reaction (1953) (38)
- Cetane number vs. structure in paraffin hydrocarbons (1998) (35)
- THE KINETICS OF DISSOCIATION OF A DIATOMIC GAS (1961) (35)
- The application of electronic digital computers to molecular orbital problems - II. A new approximation for hetero-atom systems (1956) (33)
- THE MASTER EQUATION FOR THE DISSOCIATION OF A DILUTE DIATOMIC GAS. II. APPLICATION TO THE DISSOCIATION OF HYDROGEN (1969) (33)
- The Gas-Phase Fluorination of Hydrogen-Methane Mixtures (1959) (32)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. VIII. The Rotational Contribution to Dissociation and Recombination (1973) (31)
- Abstraction of Halogen Atoms by Methyl Radicals (1966) (30)
- Thermochemistry of metallic alkyls. Part V.—Mercury di-propyl and mercury di-isopropyl (1952) (27)
- The thermal isomerisation of methyl isocyanide in the temperature range 120–320 °C (1976) (25)
- The quantum theory of unimolecular reactions: Author index (1984) (25)
- Thermochemistry of metallic alkyls. III.—mercury dimethyl and mercury methyl halides (1950) (24)
- Self-abstraction in aliphatic hydroperoxyl radicals (1998) (23)
- The Quantum Theory of Unimolecular Reactions (1984) (23)
- Toward a Unified Master-Equation Theory of Thermal Decomposition Reactions. Analytic Solution for Diatomic Dissociation - Correction (1979) (21)
- Stimulation of diesel-fuel ignition by benzyl radicals☆ (1995) (19)
- THE REACTIONS OF PHENYL RADICALS IN THE GAS PHASE AND THE CARBON-HYDROGEN DISSOCIATION ENERGY IN BENZENE (1962) (19)
- Theoretical study of benzyl radical reactivity in combustion systems (1998) (19)
- Sensitivity of molecular dynamics unimolecular rate calculations to defects in the potential-energy surface (1996) (18)
- Kinetics and thermodynamics of the reaction between iodine and fluoroform and the heat of formation of trifluoromethyl iodide (1967) (18)
- Interpretation of the Kinetics of Mercury Alkyl Pyrolysis (1956) (17)
- Free-radical-catalyzed isomerization of isocyanides (1967) (17)
- Dissociative ring-closure in aliphatic hydroperoxyl radicals (1999) (16)
- The application of electronic digital computers to molecular orbital problems I. The calculation of bond lengths in aromatic hydrocarbons (1954) (16)
- Exponential Correlation Functions for Two‐Electron Atoms (1964) (15)
- Synergy between additives in stimulating diesel-fuel ignition (1993) (15)
- Thermochemistry of metallic alkyls. IV. Mercury diethyl and mercury diphenyl (1951) (15)
- Network effects in the dissociation and recombination of a diatomic gas (1975) (15)
- Vibration-Vibration Coupling in the Dissociation of a Diatomic Gas, (1970) (15)
- Studies in energy transfer III. The effect of added gases on the decomposition of cyclobutane (1953) (15)
- A reformulation of the theory of unimolecular reactions (1978) (15)
- Equalization of Electronegativity (1963) (15)
- How Do Diesel‐Fuel Ignition Improvers Work? (1993) (14)
- Abstraction of Chlorine Atoms by Methyl Radicals (1964) (14)
- Kinetics and Thermodynamics of the Reaction between Iodine and Methane and the Heat of Formation of Methyl Iodide (1965) (14)
- The hydrogen molecule—comparison between theory and experiment (1969) (14)
- Ultraviolet sensitization of silicon detectors for space astronomical applications. (1979) (13)
- Unimolecular reactions of N2O and CO2 at high pressure (1979) (13)
- Pressure dependence of the visible lodine bana (1964) (13)
- THE DISSOCIATION OF DIATOMIC MOLECULES AND THE RECOMBINATION OF ATOMS (1962) (13)
- A new unimolecular rate expression (1980) (13)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. I. A Method of Solution (1969) (12)
- The calculation of bond lengths in naphthalene and anthracene (1955) (12)
- State-to-state theory of unimolecular reactions (1985) (12)
- Recrossings and transition-state theory. (2005) (12)
- Reversible and irreversible formulation of unimolecular reactions (1992) (12)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. X. How Rotation Causes Low Arrhenius Temperature Coefficients (1973) (12)
- Semi-emprical non-adiabatic potential energy curves for hydrogen, deutirium, and their molecule-ions (1977) (11)
- Dipole moments of diatomic molecules (1958) (11)
- Molecular rotation and isomerisation in hydrogen isocyanide (1995) (11)
- Randomization and isomerization rate constants for isocyanogen (1996) (11)
- The Reactions of CN Radicals in the Gas Phase (1965) (11)
- The heats of formation of trifluoromethyl chloride and bromide (1967) (10)
- An R.K.R.-like estimate of the effective non-adiabatic internuclear potential for the hydrogen molecule (1976) (10)
- Correlated Orbitals for Excited States of He and H (1965) (10)
- Methyl Isocyanide as a Key Molecule in Thermal Explosion Theory (1973) (10)
- Lindemann unimolecular fall-off in weak-collision systems at high temperature (1978) (10)
- A METHOD FOR THE STUDY OF CHLORINE ATOM REACTIONS. THE REACTION Cl + CH4 → CH3 + HCl (1954) (10)
- The kinetics of internal energy randomisation in thermal unimolecular reactions (1980) (10)
- The thermal decomposition of tert.-butylamine (1954) (10)
- Secondary Effects in the Thermal Decompositions of Cyclopropane and Cyclobutane (1958) (10)
- We Need To Update the Teaching of Valence Theory (2012) (10)
- Methyl isocyanide is an RRKM molecule after all (1994) (9)
- Some analytic properties of the master equation for unimolecular reaction (1981) (9)
- The nitrogen pentoxide dissociation equilibrium (1994) (9)
- The limiting high-pressure rate constant for the thermal isomerization of methyl isocyanide (1970) (9)
- Atmospheric oxidation and self-heating in rubber-containing materials (2003) (8)
- Retardation of spontaneous hydrocarbon ignition in diesel engines by di-tert-butyl peroxide (2000) (8)
- The properties of diphenyl-ether calorimeters (1972) (8)
- Thermodynamics of phosgene formation from carbon monoxide and chlorine (1970) (8)
- Comparison of unimolecular rates calculated classically and quantally from the same potential surface (1986) (8)
- Thermal explosions of methyl isocyanide in spherical vessels (1985) (8)
- Theoretical calculation of intramolecular reactions in methylperoxyl and ethylperoxyl radicals (1995) (8)
- Internal energy randomisation in weak-collision unimolecular reaction systems (1981) (8)
- Solution of the strong-collision master equation for unimolecular reaction (1981) (8)
- The commutative property of strong-transition rate matrices (1979) (7)
- 418. Arrhenius parameters of some reactions involving multiplicity changes (1956) (7)
- THE THERMAL ISOMERIZATION OF CYCLOPROPANE AT LOW PRESSURES (1963) (7)
- The variation method and the algebraic eigenvalue problem (1969) (7)
- 212. Some considerations on the strengths of hybrid bonds in excited states of the hydrogen molecule-ion (1951) (7)
- Molecular Rotation and Isomerization in Methyl Isocyanide (1994) (7)
- Thermal Decomposition of di-tert-Butyl Peroxide in Binary Mixtures near the Critical Point (1971) (7)
- COMPLETE SET EXPANSIONS FOR MOLECULAR WAVE FUNCTIONS (1961) (7)
- Classical dynamics of intramolecular energy flow in ethane (1991) (7)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas IX. Rotation–Vibration Relaxation Times (1973) (7)
- EFFECT OF NON-ZERO EXTINCTION COEFFICIENT ON ABSTRACTION–RECOMBINATION RATE RATIOS IN PHOTOCHEMICAL SYSTEMS (1963) (7)
- The Photoisomerization of Gaseous Methyl Isocyanide (1966) (7)
- Photochemical behavior of isocyanides (1971) (7)
- 792. The thermal decomposition of azomethane (1953) (6)
- Photolysis of Di-tert-butyl Peroxide at High Pressure (1972) (6)
- Zero-point energy problem in molecular dynamics calculations, and an improved method for sampling trajectories (1995) (6)
- Information theory and bulk rotational or vibrational relaxation processes (1977) (6)
- 58. The heats of hydrolysis of the chloro-substituted acetyl chlorides (1950) (6)
- A re-examination of the adiabatic correction term for the hydrogen molecule (1976) (6)
- The Thermal Decomposition of Mercuric Cyanide Vapor (1964) (6)
- Extrapolations of Electron Affinities (1954) (6)
- 127. The heats of hydrolysis of the benzoyl halides (1950) (6)
- Entropy Production in Simple Chemical Reactions (1975) (5)
- On the interpretation of measured rotational and vibrational relaxation times. II. Sudden change experiments (1976) (5)
- Isolation of the initial step in the thermal decomposition of di-tert-butyl peroxide (1969) (5)
- Decoupling vibrational relaxation from collisional deactivation in the theory of unimolecular reactions (1986) (5)
- Calorimetric study of an electrochemical reduction (1978) (5)
- Does black-body radiation cause intramolecular vibrational relaxation? (1993) (5)
- A laplace transform solution of Schrödinger's equation using symbolic algebra (1992) (5)
- Chemical activation with randomization (1984) (5)
- Effect of rotation on molecular shape (1992) (5)
- Computational chemistry in the 1950s. (2001) (5)
- The enthalpy of formation of bromophosgene (1972) (5)
- The enthalpy of formation of phosgene (1972) (5)
- On the interpretation of measured rotational and vibrational relaxation times. I. Sound dispersion experiments (1976) (5)
- Entropy Production in Chemically Reacting Systems (1974) (5)
- Strict Lindemann behaviour because of an activation bottleneck (1981) (5)
- Thermodynamics of the reaction between carbon dioxide and carbon tetrachloride (1969) (5)
- The C–C Bond Dissociation Energies in Cyclanes (1954) (5)
- An alternative view of unimolecular reaction theory (1977) (5)
- 518. Hybridization in the ground state of the hydrogen molecule-ion (1956) (5)
- Unimolecular reactions with intense radiation (1982) (4)
- Homogeneous periodic reactions (1968) (4)
- Partial state-to-state calculation of the infinite-pressure rate constant for the isomerisation of methyl isocyanide (1987) (4)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. IV. The Bottleneck Phenomenon (1971) (4)
- Master Equation for the Dissociation of a Dilute Diatomic Gas. V. Effect of Energy-level Spacing (1971) (4)
- An explicit inverse of a tridiagonal matrix (1983) (4)
- 709. A new solution of the wave equation for H (1957) (4)
- Negative Activation Energies (1959) (4)
- Fall-off shape and incubation times in weak-collision thermal unimolecular reactions (1984) (4)
- The reactions of methyl radicals with acetone, diethyl ketone, and di-tert.-butyl peroxide (1954) (4)
- Anaerobic operation of an internal combustion engine (1986) (4)
- 208. The thermal decomposition of octadeuterocyclobutane and octafluorocyclobutane (1956) (4)
- THE ISOMERIZATION OF CYCLOPROPANE—A QUASI-UNIMOLECULAR REACTION (1952) (4)
- Analysis of a proposal for nitric-oxide abatement in jet-aircraft engines (1977) (3)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. VI. Solution of Coupled Sets of Master Equations (1972) (3)
- Comments on “Initial Ionization Rates and Collision Cross Sections in Shock‐Heated Argon” (1970) (3)
- General behaviour of thermal unimolecular reactions at the low-pressure limit (1985) (3)
- The Photolysis of Acetaldehyde (1953) (3)
- Distribution of vibrational potential energy in molecular systems (1999) (3)
- N -Methyl-1,3,5,2-trioxazinane, a possible spontaneous ignition sensitiser† (1998) (3)
- Newton-variational solution of the Frank―Kamenetskii thermal explosion problem (1989) (3)
- The enthalpy of formation of benzoyl chloride (1972) (3)
- Excited States of H (1958) (3)
- The thermochemistry of the chloro-benzoyl chlorides (1975) (3)
- On the atmospheric oxidation of liquid toluene. (2006) (3)
- Shapes of unimolecular fall-off curves (1992) (3)
- LV. A property of ‘Repeating’ secular determinants (1954) (3)
- Electrostatic Interpretation of Directed Valence (1956) (3)
- Perturbed normal-mode analysis of induction times, relaxation times, and reaction rates in unimolecular reactions (1979) (3)
- The thermal isomerisation of allyl isocyanide (1979) (3)
- Vibrational disequilibrium in chemical reactions (1967) (3)
- Variational energies for highly excited states of the helium atom (1978) (2)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. VII. Vibration–Dissociation Coupling in an Expansion Nozzle (1972) (2)
- 201. The dipole moment of the helium hydride molecule-ion, HeH2+ (1957) (2)
- Heats of Formation of Dioxane—Halogen Complexes (1964) (2)
- Eigenvalue Methods in Unimolecular Rate Calculations (2004) (2)
- Kinetics of Iodination of Mercury Dimethyl in Various Solvents (1966) (2)
- Oriented collisions in the recombination and disproportionation of free radicals (1985) (2)
- On the classical simulation of unimolecular reaction processes (2011) (2)
- Faraday communications. Rotational disintegration of polyatomic molecules (1990) (2)
- Carbon dioxide versus energy balances for transportation fuels (2009) (2)
- On the distinction between weak and strong collisions in the theory of unimolecular reactions (1988) (2)
- The Master Equation for the Dissociation of a Dilute Diatomic Gas. XI. Vibrational Freezing in a Nozzle Flow (1974) (2)
- The unimolecular isomerisation of monofluorocyclopropane: a reaction with multiple fall-off characteristics? (1977) (2)
- On the Unimolecular Decomposition of the tert-Butoxy Radical (1973) (2)
- Energy transfer in very long range collisions (1992) (2)
- Specific decomposition rate constants in unimolecular reactions (1980) (2)
- On the reliability of the inversion of the Arrhenius rate law (1979) (2)
- Defective modelling of chaotic motions on empirical potential energy surfaces (2013) (2)
- The temperature coefficients of diatomic dissociation and recombination reactions (1971) (2)
- Thermal explosions with variable thermal conductivity (1982) (2)
- Partial state-to-state calculation of the rate of thermal dissociation of ethane (1990) (2)
- Stiffness of the master equation for low-temperature reaction rates (1983) (2)
- Some Kinetic Studies with para-Hydrogen. (1956) (2)
- THE REACTIONS OF DIPHENYLMETHYLENE RADICALS IN THE GAS PHASE (1960) (2)
- 224. The heat of hydrolysis of acetyl fluoride (1950) (2)
- On the interpretation of measured rotational and vibrational relaxation times. III. Failure of the mixture rule for non-dilute gases (1979) (2)
- Nonexistence of 1sns Autoionizing States of H (1969) (2)
- Temperature profiles for reactions with self-heating (1982) (1)
- Density of states and the steepest descent method: a non-iterative procedure (1977) (1)
- On the connection between incubation and relaxation times in thermal unimolecular reactions (1982) (1)
- Improved formulae for thermal unimolecular reaction rates with randomisation failure (1984) (1)
- On the uniform-interactions-mixing assumption in the theory of radiationless transitions (1979) (1)
- Electron correlation as a rotating polarization (1979) (1)
- Complete Variational Treatment of the Hydrogen Molecule. I. The Full Electronic Hamiltonian (1973) (1)
- INFRARED EVIDENCE OF SPECIFIC MOLECULAR INTERACTIONS IN RIGID MEDIA AT LOW TEMPERATURES (1961) (1)
- Validating potential energy surfaces for classical trajectory calculations (2015) (1)
- Isolation of diesel-fuel ignition inhibitors in reverse micelles (1999) (1)
- Temperature profiles in weak thermal explosions (1988) (1)
- Highly excited 1 sns states of the helium atom (1976) (1)
- Entropy production in bulk isothermal relaxation (1977) (1)
- Convergence of Hydrogen-Atom Wavefunctions (1963) (1)
- Inflections in unimolecular falloff curves (1986) (1)
- Tunneling in isolated resonance unimolecular reaction theory (1988) (1)
- Numerical simulation of the thermal explosions of gaseous methyl isocyanide (1988) (1)
- Limiting low-pressure rate constant for the stepladder model of a thermal unimolecular reaction (1984) (1)
- Connection between Classical and Quantum Descriptions of Evolution (1998) (1)
- Thermal explosions and the linear mixture rule (1988) (1)
- Simulation of thermal explosions in gaseous mixtures (1988) (1)
- Theory of vibrational relaxation in mixtures of ortho- and para-hydrogen (1981) (1)
- Thermal explosions of methyl isocyanide: a re-examination of the data (1979) (1)
- Ionization in a dense hydrogen plasma: analytic solution of the master equation (1978) (1)
- The reaction of methylene radicals with methyl isocyanide (1979) (0)
- Related upper and lower bounds to atomic binding energies (1993) (0)
- The quantum theory of unimolecular reactions: A molecular dynamic approach to specific rate functions (1984) (0)
- Thermal unimolecular reactions with two activation pathways (1984) (0)
- N-Methyl-1,3,5,2-trioxazinane, a Possible Spontaneous Ignition Sensitizer. (1998) (0)
- The quantum theory of unimolecular reactions: Units, symbols, and errata (1984) (0)
- The quantum theory of unimolecular reactions: Unimolecular fall-off in strong collision systems (1984) (0)
- The master equation for internal relaxation in molecules (1984) (0)
- Comparison of translational energy distributions calculated classically and quantally for the same reaction (1988) (0)
- The quantum theory of unimolecular reactions: The observed properties of thermal unimolecular reactions (1984) (0)
- Eigenvalue methods for unimolecular rate calculations with several products. (2007) (0)
- OF THE INFINITE-PRESSURE RATE CONSTANT FOR THE ISOMERISA TION OF METHYL ISOCYANIDE (1987) (0)
- Staged Turbojet Engine Would Emit Less NO (1982) (0)
- KINETICS OF DISSOCIATIVE CYCLIZATION OF HYDROPEROXYL RADICALS (1999) (0)
- SCALING AND THE VIRIAL THEOREM (1963) (0)
- The quantum theory of unimolecular reactions: Rate constants for the thermal isomerisation of cyclopropane and for the thermal decomposition of cyclobutane (1984) (0)
- THE THERMAL ISOMERIZATION OF METHYL ISOCYANIDE IN THE TEMPERATURE RANGE 120-320°C (1976) (0)
- Computationaly in the 1950s (2001) (0)
- The quantum theory of unimolecular reactions: Computer programs for thermal unimolecular reactions (1984) (0)
- Failure of the scaling laws in the thermal explosion of methyl isocyanide (1977) (0)
- tial energy surfaces for classical trajectory calculations (2015) (0)
- Isomerization of methyl isocyanide sensitized by vibrationally excited ethane (1969) (0)
- The heat of mixing of hydrogen cyanide and hydrogen fluoride in the liquid phase (1978) (0)
- Comment: Strict Lindemann behavior as a limiting form (1983) (0)
- Reaction as a perturbation of the internal relaxation (1984) (0)
- 394. The heats of hydrolysis of chloral and bromal, and the C—C bond dissociation energies in chloral and bromal (1950) (0)
- Multi-exponential unimolecular rate formulae (1990) (0)
- Weak collision processes (1984) (0)
- Incubation times in strong-collision thermal unimolecular reactions (1983) (0)
- A TEST OF TRANSITION STATE THEORY (1960) (0)
- The quantum theory of unimolecular reactions: Building in the randomisation processes (1984) (0)
- The quantum theory of unimolecular reactions: References (1984) (0)
- Intramolecular energy transfer in bimolecular reactions (2010) (0)
- Iso-Nitrous Acid: Spectral Frequencies and Possible Synthetic Pathways. (2002) (0)
- The latent heat of vaporization of an organic solid: An undergraduate experiment (1975) (0)
- Unimolecular reactions with intense radiation (continued) (1982) (0)
- The quantum theory of unimolecular reactions: How well does it all work? (1984) (0)
- Relative collision efficiencies in thermal unimolecular reactions (1981) (0)
- Anomalous Rate Laws in the Halogenation of Carbon Tetrahalides (1972) (0)
- The quantum theory of unimolecular reactions: The specific rate function k ( E ) as an inverse Laplace transform (1984) (0)
- How Brian Gray became a combustion scientist (2001) (0)
- THE MASTER EQUATION FOR THE DISSOCIATION OF A DILUTE DIATOMIC GAS PART 10, HOW ROTATION CAUSES LOW ARRHENIUS TEMPERATURE COEFFICIENTS (1973) (0)
- Spectroscopic and Kinetic Studies in Shock Tubes (1970) (0)
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