Ms. Gordon et Sr. Kass, CHN2- - A BIRADICAL ANION AND A POTENTIALLY NEW-TYPE OF REACTIVE INTERMEDIATE, Journal of physical chemistry, 99(17), 1995, pp. 6548-6550
MCSCF calculations reveal that diazirinyl anion (1), its conventional
C-s structure resulting from deprotonation of diazirine (c-CH2N2), is
less stable than its open C-2v isomer (2) in which the two nitrogens a
re no longer bound. The latter species represents a novel type of reac
tive intermediate, a biradical inion. It is calculated to have a large
electron binding energy (0.80 eV) and is an experimentally attractive
target. G2 theory has been used to provide the heats of formation of
diazomethane and diazirine, two important compounds whose experimental
energies are not well established.