Accession Number : AD0682230

Title :   THE VIBRATIONAL SPECTRA OF DICYANODIAZOMETHANE ((CN)2CNN) AND THE DICYANOMETHYLENE FREE RADICAL (:C(CN)2).

Descriptive Note : Technical rept.,

Corporate Author : MICHIGAN STATE UNIV EAST LANSING DEPT OF CHEMISTRY

Personal Author(s) : Smith,William Hayden ; Leroi,George E.

Report Date : FEB 1969

Pagination or Media Count : 29

Abstract : Infrared spectra were obtained for (CN)2CNN in the solid state and isolated in inert matrices. Crude Raman spectra of dicyanodiazomethane in acetonitrile solution were also obtained. The vibrational analysis has been performed on the basis of C2v symmetry and correlated with the spectra of a number of related molecules. Photolysis of matrix isolated (CN)2CNN yields sufficient :C(CN)2 (dicyanomethylene), stabilized in situ, to permit observation of the infrared spectrum. The results of the vibrational analysis indicate that the linear diradical has an extremely low central carbon bending frequency, analogous to those of C3O2 and C3S2. (Author)

Descriptors :   (*NITRILES, *INFRARED SPECTRA), (*FREE RADICALS, NITRILES), RAMAN SPECTROSCOPY, PHOTOLYSIS, MOLECULAR STRUCTURE, BAND SPECTRA

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE