Erich Clar
Czech chemist
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(Suggest an Edit or Addition)According to Wikipedia, Erich Clar was an Austrian organic chemist who studied polycyclic aromatic hydrocarbon chemistry. He is considered as the father of that field. In 1941, he authored "Aromatische Kohlenwasserstoffe" and in 1964 the greatly expanded two-volume Polycyclic Hydrocarbons, which described the syntheses, properties, and UV-visible absorption spectra of hundreds of PAHs. He discovered the Clar reaction of the cyclic ketone perinaphthenone to form dibenzo[cd,lm]perylene in a 400 C melt of zinc dust, zinc chloride, and sodium chloride. He created the Sextet Theory, now eponymously called Clar's rule, to describe the behavior of polycyclic aromatic hydrocarbon isomers. This was described in his book The Aromatic Sextet. He was awarded the August Kekulé Medal by the Chemical Society of the GDR in 1965, the highest award given by that society to foreign scientists, and the first Polycyclic Aromatic Hydrocarbon Research Award of the International Symposium on Polynuclear Aromatic Hydrocarbons in 1987.
Erich Clar's Published Works
Published Works
- The aromatic sextet (1972) (962)
- Polycyclic Hydrocarbons (1964) (311)
- Photoelectron spectra of polynuclear aromatics. III. The effect of nonplanarity in sterically overcrowded aromatic hydrocarbons (1974) (185)
- Aromatic Hydrocarbons. LXV. Triangulene Derivatives1 (1953) (114)
- Skin impedance and moisturization (1975) (87)
- Photoelectron spectra of polynuclear aromatics. 6. Applications to structural elucidation: "circumanthracene" (1981) (85)
- Absorption spectra of aromatic hydrocarbons at low temperatures. LV-Aromatic hydrocarbons (1950) (79)
- Correlations between photoelectron and ultraviolet absorption spectra of polycyclic hydrocarbons and the number of aromatic sextets (1975) (74)
- 927. Syntheses of coronene and 1 : 2-7 : 8-dibenzocoronene (1957) (66)
- 378. 1 : 12-2 : 3-10 : 11-Tribenzoperylene (1958) (53)
- Correlations between photoelectron and ultraviolet absorption spectra of polycyclic hydrocarbons. The perylene, coronene and bisanthene series (1977) (51)
- Correlations between photoelectron and phosphorescence spectra of polycyclic hydrocarbons (1976) (42)
- The significance of Kekulé structures for the stability of aromatic systems—II (1958) (42)
- Aromatic Hydrocarbons. LXIII. Resonance Restriction and the Absorption Spectra of Aromatic Hydrocarbons1 (1952) (41)
- Synthesis of Ovalene (1948) (31)
- Localised vs delocalised molecular orbitals in aromatic hydrocarbons (1979) (31)
- The establishment of double bond character in methyl derivatives of phenanthrene, pyrene, chrysene and coronene by NMR (1967) (30)
- Benzologues and other derivatives of peropyrene (1960) (30)
- Circobiphenyl and the attempted synthesis of 1:14, 3:4, 7:8, 10:11-tetrabenzoperopyrene (1972) (30)
- 519. Four higher annellated pyrenes with acene character (1957) (29)
- The synthesis of 1:2, 3:4, 5:6, 7:8, 9:10, 11:12-hexabenzocoronene (1965) (28)
- Correlations between photoelectron and uv absorption spectra of polycyclic hydrocarbons. The pyrene series (1979) (28)
- Spectral Resemblances of Cata‐Condensed Hydrocarbons (1949) (25)
- Prosphorescence and ODMR studies of some coronene compounds (1978) (24)
- The non-existence of a threefold aromatic conjugation in linear benzologues of triphenylene (starphenes) (1968) (24)
- Asymmetric and symmetric annellation effects—III: Benzocoronenes☆ (1959) (23)
- NMR studies of perylene and coronene derivatives (1968) (22)
- Higher annellated 1:2,7:8-dibenzochrysenes (1964) (21)
- Aromatic Hydrocarbons. LXVIII. Triangulene Derivatives. Part II1 (1954) (21)
- Equilibrium Between Methyl-Acences and Methylenedihydroacenes (1949) (20)
- Annellation effects in the pyrene series and the classification of absorption spectra (1963) (19)
- 428. Aromatic hydrocarbons. Part LI. The synthesis of dinaphthopyrenes (1949) (18)
- Polycyclic Hydrocarbons (1964) (18)
- 4,5:12,13-dibenzoheptazethrene and 5,6:8,9:14,15:17,18-tetrabenzoheptacene (1960) (17)
- Asymmetric annellation effects—IV : Dibenzacenes☆ (1960) (15)
- The significance of benzenoid rings for the stability of aromatic hydrocarbons (1960) (15)
- The location of double bonds in fluoranthene (1969) (14)
- Aromatic Hydrocarbons. LXVII. Heptaphene and 2,3,8,9-Dibenzopicene (1954) (14)
- Benzologues of terrylene (1971) (13)
- The electronic interaction in benzologues of pyrene (1970) (13)
- Asymmetric Annellation Effects (1959) (13)
- Annellation effects in the perylene and coronene series (1966) (11)
- 368. Aromatic hydrocarbons. Part LVIII. The structure of azulene (1950) (11)
- 189. 2 : 3-Benzorubicene, rubicene, and their derivatives (1958) (10)
- 2,3:4,5:8,9:10,11-Tetrabenzoperylene and 1,2:3,4:7,8:9,10-tetrabenzocoronene (1972) (10)
- 754. Circumanthracene and dinaphtho(7′ : 1′-1 : 13)(1″ : 7″-6 : 8)-peropyrene (1956) (10)
- Correlations between photoelectron and ultraviolet absorption spectra of polycyclic hydrocarbons : The terrylene and peropyrene series (1978) (8)
- 508. The crystal structures of some analogues of perylene (1958) (8)
- Aromatic hydrocarbons. Part LXVI. Diperinaphthyleneanthracenes (1954) (8)
- Annellation effects in the fluoranthene series (1964) (8)
- The C—C Bond Length in Polycyclic Hydrocarbons (1964) (7)
- 522. Benzo[a]perylene and some of its derivatives (1956) (7)
- The Aromatic Sextet and its Significance in Relation to the Stability of Aromatic Systems (1964) (7)
- 708. Aromatic hydrocarbons. Part LXI. Pentaphene (1951) (7)
- Benzologues of perylene, coronene and anthanthrene (1964) (7)
- The location of double bonds in alkylpyrenes (1970) (6)
- Electrical Conductivity of Circumanthracene (1965) (6)
- Asymmetric annellations—V : Phenylacenes (1961) (6)
- 513. Aromatic hydrocarbons. Part LIII. 7 : 8-Benzheptaphene (1949) (6)
- The nature of para-bond and of para-coupling (1972) (6)
- Higher annelated pyrenes—II (1963) (5)
- 314. 1 : 2-Benzocoronene and naphtho(2′ : 3′-1 : 2)coronene (1958) (5)
- 462. Aromatic hydrocarbons. Part LII. Naphtho(2′ : 3′ : 1 : 2)-pyrene, 1 : 2-4 : 5-8 : 9-tribenzpyrene, and a new synthesis of 1 : 2-3 : 4-dibenzanthrace (1949) (5)
- Skin impedance and phoreographic index in psoriasis (1979) (5)
- Naphthopentacene and the annellation principle (1972) (5)
- New benzenogenic diene syntheses (1974) (4)
- Nomenclature of Polycyclic Hydrocarbons (1964) (4)
- Pyrrolidone carboxylic acid and the skin. (1981) (4)
- 5. 2 : 3–5 : 6–8 : 9-Tribenzoperinaphthene (1958) (4)
- Excitation Energies of Azulene and Naphthacene Triplets (1965) (3)
- THE REACTION OF PICENE WITH MALEIC ANHYDRIDE (1973) (3)
- The condensation of 2,2′-binaphthyl with maleic anhydride (1973) (3)
- The Significance of Double Bonds and Kekulé Structures for the Stability of Aromatic Systems (1964) (2)
- Kekulé structures and the benzylic coupling of o-dimethyl-derivatives (1971) (2)
- 836. 2 : 3-Benzopicene and naphtho(2′ : 3′-1 : 2)chrysene (1957) (2)
- The location of double bonds in methyl-acenes (1970) (2)
- bis-peri-Phenylenenaphthalene (1950) (2)
- The Annellation Principle (1964) (2)
- Unusual π-electron conjugation in the pyrene series (1979) (1)
- The Building Principles of Aromatic Hydrocarbons. (1962) (1)
- Hydrocarbons derived from Bisanthene (1964) (1)
- CORRELATIONS BETWEEN PHOTOELECTRON AND ULTRAVIOLET ABSORPTION SPECTRA OF POLYCYCLIC HYDROCARBONS. THE PERYLENE, CORONENE, AND BISANTHENE SERIES (1977) (1)
- Hydrocarbons derived from Anthanthrene (1964) (1)
- Hydrocarbons derived from Peropyrene (1964) (1)
- Hydrocarbons Containing One Five-membered Ring (1964) (1)
- The C=C Double Bond and Conjugation in Butadiene (1964) (1)
- Hydrocarbons Containing Three Linearly Annellated Benzene Rings (1964) (1)
- Hydrocarbons derived from 2.3- peri -Naphthylenepyrene (1964) (0)
- Hydrocarbons Consisting of Six-membered Rings in which One Carbon Atom Is Linked with Two Hydrogen Atoms (1964) (0)
- Hydrocarbons Containing Four Five-membered Rings (1964) (0)
- The Ionization Potentials and the Electronic Levels of the Aromatic Sextet (1964) (0)
- Hydrocarbons Consisting of Six- and Five-membered Rings which Have Formally Fixed Double Bonds (1964) (0)
- Hydrocarbons Containing Three Five-membered Rings (1964) (0)
- Hydrocarbons with Eight and More Linearly Annellated Rings (1964) (0)
- The Tautomerism of Phenols (1964) (0)
- Theories about the Aromatic Bonds in Benzene (1964) (0)
- The Relation between ρ -, α - and β -Bands, Phosphorescence Bands and the Reactive ρ -State in Aromatic Hydrocarbons (1964) (0)
- Observations on further occurrences of the Prebichl Beds (1972) (0)
- The Relation between Hydroquinols and Quinones (1964) (0)
- The Possibility of Bond Fixation by Substitution (1964) (0)
- Carbon Atoms, p-Electrons and Hybridization (1964) (0)
- Hydrocarbons derived from Quaterphenyl (1964) (0)
- PHOTOELECTRON SPECTRA OF POLYNUCLEAR AROMATICS PART 3, THE EFFECT OF NONPLANARITY IN STERICALLY OVERCROWDED AROMATIC HYDROCARBONS (1974) (0)
- Hydrocarbons with Seven Linearly Annellated Rings (1964) (0)
- Hydrocarbons Containing up to Two Linearly Annellated Benzene Rings (1964) (0)
- Hydrocarbons with Four Linearly Annellated Benzene Rings (1964) (0)
- Non-coplanar, Overcrowded Aromatic Hydrocarbons (1964) (0)
- The Electrical Conductivity of Aromatic Hydrocarbons (1964) (0)
- Hydrocarbons derived from 2.3,7.8-Di-(peri-naphthylene)-pyrene (1964) (0)
- Asymmetric annellation effects—Part II (1959) (0)
- General Methods for the Preparation of Aromatic Hydrocarbons (1964) (0)
- Quinquiphenyl and Sexiphenyl (1964) (0)
- Magnetic Properties of Aromatic Hydrocarbons (1964) (0)
- Hydrocarbons Containing Two Five-membered Rings (1964) (0)
- [The electrophysiological parameters of the epidermis in psoriasis (preliminary study)]. (1976) (0)
- Letter from E. Clar to Joshua Lederberg (1965) (0)
- [Book Reviews] (1953) (0)
- Asymmetric and symmetric annellation effects—Part III : Benzocoronenes (1959) (0)
- Hydrocarbons derived from Diphenyl (1964) (0)
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