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Triplet—triplet absorption of some azanaphthalenes

✍ Scribed by C. Tetreau; D. Lavalette; F. Peradejordi


Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
325 KB
Volume
20
Category
Article
ISSN
0009-2614

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📜 SIMILAR VOLUMES


Calculation of triplet energies in azana
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Calculated energies.ofseverai low-lying triplet states of quinoline, isoquinoIine and a series of diazanap~~~cnes are reported for comparison with a recent determination of the nature of the lowest triplet. 'The calculations were made both by ihe CNDO/S CI method and by a direct SCF calculation of t

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The CNDO,5 method of de1 Bent and Jaff6 has been applied to the study of the triplet-triplet absor;?tion of ;eq;jne and omc methylated derivatives. The fist allowed triplet-triplet transition in benzene is assigned to the J%g + 3Bd transition.

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Triplet-triplet absorption of biphenylene was sensitized by naphthalene. A band is observed at 29 500 cm-l and is assigned to a predicted 3B& + 3B& transition. Triplet biphenylene has a lifetime of 100 psec in solution. Nonradiative processes are thought to affect mainly the first singlet state of b

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## Abstract The triplet‐triplet absorption spectra of __p__‐__N, N__‐dimethylnitroaniline, 4‐nitro‐__p__‐terphenyl, 1‐amino‐4‐nitrofluorene, 5‐nitroacenaphthene, __trans__‐1‐(4‐methoxy‐phenyl)‐2‐nitroethylene (MeONS), and __trans__‐1‐(4‐dimethylaminophenyl)‐2‐nitroethylene (DANS) in EPA glass at 77