作者:Ana C. Albéniz、Juan C. Cuevas、Pablo Espinet、Javier de Mendoza、Pilar Prados
DOI:10.1016/0022-328x(91)80011-8
日期:1991.6
Palladium-chelate complexes of the type [PdX2(L-L)] [X = Cl; L-L = 3,3′- (1), 5,5′- (2), or 7,7′-dimethyl-2,2′-biindazole (3) have been prepared, but are too insoluble for structural studies. When X = C6F5 the position of the methyl substituents is critical: thus, 3 is unable to give the corresponding complex due to severe methyl-C6F5 interactions, 2 gives a planar complex, and 1 gives a non-planar
[PdX 2(LL)]类型的钯-螯合物[X = Cl; 已经制备了LL = 3,3′-(1),5,5′-(2)或7,7′-二甲基-2,2′-联吲唑(3),但是对于结构研究而言太不溶了。当X = C 6 F 5时,甲基取代基的位置至关重要:因此,由于严重的甲基-C 6 F 5相互作用,3不能给出相应的配合物,2给出了平面的配合物,1给出了非平面的配合物如19 F NMR光谱所示,由于甲基-甲基相互作用而形成的(可能是螺旋烯型)络合物。[钯(C 6 F5)X(LL)] [X = Br; LL = 1 ]也是非平面的。