关键词: QTAIM crystal structure stannane topology analysis tri­phenyl­phosphate

来  源:   DOI:10.1107/S2056989023000270   PDF(Pubmed)

Abstract:
The title SnIV complex, [Sn(C6H5)3Cl(C18H15O4P)], is a formal adduct between triphenyl phosphate (PhO)3P=O and the stannane derivative chlorido-tri-phenyl-tin, SnPh3Cl. The structure refinement reveals that this mol-ecule displays the largest Sn-O bond length for compounds including the X=O→SnPh3Cl fragment (X = P, S, C, or V), 2.6644 (17) Å. However, an AIM topology analysis based on the wavefunction calculated from the refined X-ray structure shows the presence of a bond critical point (3,-1), lying on the inter-basin surface separating the coordinated phosphate O atom and the Sn atom. This study thus shows that an actual polar covalent bond is formed between (PhO)3P=O and SnPh3Cl moieties.
摘要:
标题SnIV复杂,[Sn(C6H5)3Cl(C18H15O4P)],是磷酸三苯酯(PhO)3P=O和锡烷衍生物氯-三苯基-锡之间的正式加合物,SnPh3Cl.结构细化表明,对于包括X=O→SnPh3Cl片段(X=P,S,C,或V),2.6644(17)。然而,AIM拓扑分析基于波函数计算从精细的X射线结构显示的键临界点(3,-1)的存在,位于盆间表面上,将配位的磷酸盐O原子和Sn原子分开。因此,该研究表明,在(PhO)3P=O和SnPh3Cl部分之间形成了实际的极性共价键。
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