Nickel(II) complexes containing 1,1,4,7,10, 10-hexaphenyl-1,4,7,10-tetraphosphadecane: First X-ray structures of nickel-tetraphos-1 complexes
作者:Christian Bachmann、Werner Oberhauser、Peter Bru¨ggeller
DOI:10.1016/0277-5387(95)00475-0
日期:1996.7
Mono- and bimetallic NiII complexes ofrac- ormeso-1,1,4,7,10,0-hexaphenyl-1,4,7,10-tetraphosphadecane (tetraphos-1, P4) have been prepared and characterized by X-ray diffraction methods,31P1H} NMR spectroscopy, elemental analyses and melting points. The first two X-ray structures of Ni-tetraphos-1 complexes show distorted square planar coordinations inrac-[NiP4](BPh4)2(2) andrac-[Ni2Cl4P4] (5). IN2
制备了外消旋或内消旋-1,1,4,7,10,0-六苯基-1,4,7,10-四磷烷(tetraphos-1,P4)的单金属和双金属Ni II配合物,并用X表征射线衍射法,31 P 1 H} NMR光谱,元素分析和熔点。Ni-tetraphos-1配合物的前两个X射线结构在rac- [NiP4](BPh 4)2(2)和rac- [Ni 2 Cl 4 P4](5)中显示扭曲的方形平面配位。IN 2磷原子与穿过磷原子和镍原子的最小二乘平面的平均偏差为0.224A˚。镍原子偏离该平面0.034A˚。在5中,磷和氯原子与相应平面的平均偏差为0.023A˚,镍原子与该平面的偏差为0.028A˚。2中84.75°的平均螯合PNiP角显着偏离5中86.90(11)°的螯合角,后者是NiNi距离为6.339(1)A˚且为顺式螯合和桥接P4的开式二聚体配置。5的两个协调平面的夹角为7.2°。与rac- [NiP4]