作者:Günther Maier、Hans Peter Reisenauer、Raimund Ruppel
DOI:10.1002/ejoc.200300204
日期:2003.7
Irradiation of matrix-isolated dicyanodiazomethane (4) with 254 nm-light leads to the dicyanocarbene 5, which, upon further photoexcitation, undergoes successive isomerizations until a photoequilibrium between the five C3N2 isomers dicyanocarbene (T-5), cyanoisocyanocarbene (T-6), 3-cyano-2H-azirenylidene (S-7), 3-isocyano-2H-azirenylidene (S-8), and diisocyanocarbene (S-9) is reached. The preferential
用 254 nm 光照射基质分离的双氰基重氮甲烷 (4) 导致双氰基卡宾 5,其在进一步光激发后经历连续异构化,直到五种 C3N2 异构体双氰基卡宾 (T-5)、氰基异氰卡宾 (T-6) 之间达到光平衡、3-氰基-2H-亚氮基(S-7)、3-异氰基-2H-亚氮基(S-8)和二异氰基卡宾(S-9)。可以通过改变照射光的波长来优先形成该组的特定成员。未知化合物 6-9 的结构解析基于其计算和实验红外光谱的比较。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)