1.2- Dinitro-l,2-ethylene derivs

Dinrtro-l,3,5,7-totroozabicyclo[3.3.2]-decane. CA name for 3,7-Dinitro-l, 5-endo-ethylene-1,3,5,7-tetraaza-2,4,6,8-cyclooctane, described under l,5-EndoethyIene-l,3,5,7-tetraaza-2,4,6,8-cyclooctane and Derivatives... 

The products of the thermolysis of 3-phenyl-5-(arylamino)-l,2,4-oxadiazoles and thiazoles have been accounted for by a radical mechanism.266 Flash vacuum pyrolysis of 1,3-dithiolane-1-oxides has led to thiocarbonyl compounds, but the transformation is not general.267 hi an ongoing study of silacyclobutane pyrolysis, CASSF(4,4), MR-CI and CASSCF(4,4)+MP2 calculations using the 3-21G and 6-31G basis sets have modelled the reaction between silenes and ethylene, suggesting a cyclic transition state from which silacyclobutane or a trcins-biradical are formed.268 An AMI study of the thermolysis of 1,3,3-trinitroazacyclobutane and its derivatives has identified gem-dinitro C—N bond homolysis as the initial reaction.269 Similar AMI analysis has determined the activation energy of die formation of NCh from methyl nitrate.270 Thermal decomposition of nitromethane in a shock tube (1050-1400 K, 0.2-40 atm) was studied spectrophotometrically, allowing determination of rate constants.271... 

The absorption and emission spectra and transient triplet-triplet (T-T) absorption spectra of five fluorostilbenes were studied over a wide temperature range, down to 90 K, and compared with stilbene [12]. The phosphorescence spectra of 5,10-dihydro-5,10-dimethylindolo[3,2-b]indole, its 2,7-dicarbethoxy derivatives, and various S and Se analogues of the latter were measured in liquids, glasses, and low-temperature inert gas or N2 matrices [13]. Properties of the triplet state (T-T) absorption spectra (Figure 3.7) and triplet lifetimes of trans-l-(R)-2-(2,4-dinitrophenyl)ethylenes (R 1-naphthyl Ila, 9-anthryl Ilh, styryl lie and 4-(2, 4 -dinitro)- rans-stilbenyl Ild)... 

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