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Photochromie von Dimethylthiathiophthen und N‐Analoǵa von Thiathiophthenen
Author(s) -
Calzaferri Gion,
Gleiter Rolf,
Gygax Reudi,
Knauer KarlHeinz,
Schmidt Erika,
Behrinǵer Hans
Publication year - 1973
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19730560743
Subject(s) - chemistry , yield (engineering) , kinetic energy , transient (computer programming) , infrared , analytical chemistry (journal) , thermodynamics , organic chemistry , optics , physics , quantum mechanics , computer science , operating system
Irradiation of N‐analogs of thiathiophthenes and dimethylthiathiophthene yield a transient which reverts thermally to the starting product. Kinetic measurements for this thermal reaction yield E a values in the range of 9–14 kcal/mol and ΔS ≠ values between – 10 and – 30 e.u. The structure of the transient is discussed based on these data, its electronic and infrared spectrum.