نتایج جستجو برای: anils

تعداد نتایج: 30  

2012
N. Tyutyulkov I. Kavrakova P. Nikolov F. Dietz

The present study is related to our theoretical in­ vestigations [1—3] of diamino derivatives of the antiaromatic cyclopentadienyl cation (CPC). The theoretical results were confirmed with the brilliant synthesis of 6-amino-l,4-dimethyl-5,7-diphenyll,2,3,4-tetrahydrocyclopentapyrazin-6-ylium-tetrafluoroborate, carried out by Gompper et al. [4] and of some other stable cyclopentadienyl salts [5]...

1999
Sivaprasad Mitra Naoto Tamai

Dynamics of photochromism have been studied in anil compounds using femtosecond transient absorption and picosecond fluorescence spectroscopies. The experimental observations were compared with the theoretical results obtained Ž . from AM1–SCF calculations. Excited-state intramolecular proton transfer ESIPT and photochromic reaction were found to occur from the S state, whereas normal fluoresce...

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