Infrared spectra of dicyanodiazomethane [(CN)2CNN] and the dicyanomethylene free radical [:C(CN)2]

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Abstract

Infrared spectra have been obtained for (CN)2CNN in the solid state and isolated in inert matrices. 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 observed bands are consistent with the predictions of a vibrational analysis which assumes a linear structure (D∞h) for the diradical and utilizes force constants transferred from other molecules.

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    • Cited by (0)

    1

    Present address: Princeton University Observatory, Princeton, New Jersey 08540.

    2

    Present address: Department of Chemistry, Michigan State University, East Lansing, Michigan 48823.

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