Halostibines SbMeX<sub>2</sub> and SbMe<sub>2</sub>X: Lewis Acids or Lewis Bases?
作者:Sophie L. Benjamin、William Levason、Gillian Reid、Robert P. Warr
DOI:10.1021/om2010996
日期:2012.2.13
axial, with the bond distances little affected by coordination. Significant changes in the bonding within the group 6 carbonyl complexes [M(CO)5(L′)] are evident, with L′→M σ-donation decreasing across the series L′ = SbMe3 → SbMe2Br → SbMeBr2, and an increase in M→L′ π-acceptance within the same series. Intermolecular interactions are a major feature within these systems, ranging from weak, MCO···Sb
已经显示出烷基halostibines对适当的中性配体起路易斯酸的作用,或对低价金属片段起路易斯碱的作用。他们的路易斯酸和路易斯碱行为的边界已确定,并探讨了不同行为的结构和光谱结果。[SbMeX 2(L–L)](L–L = 2,2'-联吡啶,1,10-菲咯啉)和[SbMeX 2(L)2 ](L = OPMe 3,OPPh 3)是五坐标, Me基呈轴向扭曲的方金字塔形单体,键距几乎不受配位影响。6羰基配合物[M(CO)5(L')]是明显的,在整个序列L'= SbMe 3 →SbMe 2 Br→SbMeBr 2中,L' →Mσ捐赠减少,而在同一序列中M→L'π接受度增加。分子间相互作用是这些系统中的主要特征,范围从[M(CO)5(SbMe 2 Br)]和[M(CO)5(SbMeBr 2)]中的弱MCO ·· Sb相互作用到显着强的O· ··[Mn(CO)5(SbMe 2 Br)] [CF 3 SO