the corresponding ligands L. The salt with bipyridyl (1a) forms the complex [Cb2Ni]Na·2L (3). Complexes 2a and 3 decompose at 200–230°C to form 3-(2,2′-bipyridyl)-closo-3,1,2-nickeladicarbadodecaborane (4). Compound 4 has also been prepared by thermal decomposition of bipyridyl complexes of bis-(1-o-carboranyl)nickel or the nickel salt of 1-o- carboranecarboxylic acid. In this case, the o-carboranic
[Cb 2 Ni III ] 2 Ni II ·4L化合物(2a,b),其中Cb为π-(3)-1,2,-C 2 B 9 H 11,L为
2,2'-联吡啶(2a)通过在相应的
配体L存在下使NiCl 2与[Cb 2 Ni III ] Na(1)反应制备了
吡啶或
吡啶(2b)。与联
吡啶(1a)的盐形成了络合物[Cb 2 Ni] Na·2L(3)。配合物2a和3分解在200-230℃,以形成3-(
2,2'-联吡啶) -闭合碳-3,1,2-nickeladicarbadodecaborane(4)。化合物4也已经制备双- (1-联
吡啶复合物的热分解ö -carboranyl)
镍或1-的
镍盐ø - carboranecarboxylic酸。在这种情况下,ø -carboranic核被变换成一个闭合碳-nickelacarboranic之一。