organoazides N3R with isocyanides R′NC. [Me3NN]Ni(CNR)2 (R = tBu, Ar (Ar = 2,6-Me2C6H3)) species provide carbodiimides RN═C═NAr′ upon reaction with Ar′N3 (Ar′ = 3,5-Me2C6H3). Nitrene transfer takes place via the intermediacy of nickel imides. Reaction of [MexNN]Ni(2-picoline) (x = 2 or 3) with Ar′N3 gives the new dinickel imides [MexNN]Ni}2(μ-NAr′) (4 (x = 3) and 5 (x = 2)) as deep purple, diamagnetic
β-二酮亚胺基
镍(I)物种[Me 3 NN] Ni(2-picoline)(1)在一系列有机
叠氮化物N 3 R的反应中用作碳二
亚胺(RN═C═NR')形成的有效催化剂与
异氰酸酯R'NC。[Me 3 NN] Ni(CNR)2(R = t Bu,Ar(Ar = 2,6-Me 2 C 6 H 3))物种在与Ar'N 3(Ar ′= 3,5-Me 2 C 6 H 3)。
乙二胺的中间发生转移。[Me x NN] Ni(2-picoline)(x= 2或3)和Ar'N 3产生新的二
镍酰亚胺[Me x NN] Ni} 2(μ-NAr')(4(x = 3)和5(x = 2))为深紫色,反磁性物质。[Me 2 NN] Ni} 2(μ-NAr')(5)的X射线结构具有短的Ni-N
酰亚胺距离,分别为1.747(2)和1.755(2)Å,以及短的Ni-Ni距离2.7210(3)Å。这些二
镍酰亚胺4和5与t B