radicals and N(3) accounts for the tertiary amine). For 2, a model of a dimer has been used giving rise to a weak antiferromagnetic interaction between the radicals (J/k(B) = -5.3 K). For 3, a very strong intramolecular antiferromagnetic coupling has been found and estimated at J/k(B) = -230 K and J'/k(B) = -110 K between the nickel and each radical using an asymmetric model of a trimer. For 4, an unusual
6-
氨基甲基-双[甲基-2-(4,5-二氢-4,4,5,5-四甲基
咪唑啉基-3-氧化物-1-氧基)]-
2,2'-联吡啶的过渡
金属配合物,bpyN( NIT)(2),1已合成,并通过FAB-MS,UV-vis,FT-IR和EPR光谱,元素分析和磁化率测量进行了表征。已对所有具有以下晶体数据的化合物进行了单晶X射线衍射研究:bpyN(NIT)(2),1,三斜晶系,P(-)1,Z = 2,a = 10.7224(4)A, b = 11.0995(4)A,c = 13.1134(3)A,alpha = 114.101(9)度,beta = 97.476(9)度,gamma = 99.667(9)度;ZnbpyN(NIT)(2),2,六角形,P3(2),Z = 3,a = 15.4545(3)A,b = 15.4545(3)A,c = 13.5594(3)A; NibpyN(NIT)(2),3,六角形,P3(2),Z