OMe)4(OC2H4OMe)2 units. The alkoxo functionality leads to a distorted pyramidal tetragonal surrounding, but the ether functionality of the bridging groups provides further oxygen donors, and thus coordination numbers of seven and even eight are reached. Bi(OSiPh3)3(THF)3 is monomeric wi th a capped octahedron geometry around the metal. The thermal stability of the volatile precursors 1 and Bi(dpm)3 is in
已经研究了制备
铋(III)醇盐和
β-二酮酸酯衍
生物的各种途径。卤化物和适当的
钠衍
生物的易位反应提供[Bi(O t Bu)3 ]∞(1),[Bi 2(OC 2 H 4 OMe)6 ]∞(2),[Bi(OSiPh 3)3 ] m和Bi(dpm)3(dpmH =二新戊酰
甲烷),收率良好。醇盐显示出不同的物理性质。1具有良好的挥发性,而2具有高度溶解性。配合物2和Bi(OSiPh 3)3(THF)3(3)已经通过X射线衍射表征。化合物2示出了一维扩展的“偏斜”链基于二聚体不对称结构的Bi 2(μ 2,η 1 -OC 2 H ^ 4 OME)4(OC 2 H ^ 4 OME)2个单元。烷氧基官能度导致扭曲的
金字塔四角形周围,但是桥接基团的醚官能度提供了更多的氧供体,因此达到了七个甚至八个的配位数。Bi(OSiPh 3)3(THF)3是具有围绕
金属的封端八面体几何形状的单体。挥发性前体1和Bi(dpm