Organophosphines in PtP2Si2 derivatives – structural aspects

Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2020-05-03 DOI:10.1080/10426507.2019.1708360

M. Melnik, P. Mikuš

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引用次数: 1

Abstract

Abstract In this review, the structural data of monomeric platinum(II) complexes with inner coordination spheres of Pt(η2-P2L)(SiL)2, Pt(η2-P2L)(η2-Si2L) and Pt(η2-P,SiL)2 are classified and analyzed. These complexes crystallize in three crystal systems: monoclinic (8 examples), triclinic (4 examples) and orthorhombic (4 examples). Distorted square-planar environments about the Pt(II) atoms are built up by combination of homobi-P,P with two monodentate Si donor ligands; homobi-PP with homo-Si,Si donor ligands, or heterobi-P,Si donor ligands. The chelating ligands create metallacycles with the following angles: 65.0° (SiOSi) < 83.1° (SiC2Si) < 85.2° (PC2P) < 88.8° (SiSi2Si)). The mean Pt-P and Pt-Si bond distances in Pt(η2-P2L)·(SiL)2 complexes are 2.319 and 2.365 Å; in Pt(η2-P2L)(η2-Si2L) the values are 2.316 and 2.360 Å. The complex [Pt{η2-Me2P(C2B10H10)SiMe2}2] exists in two isomeric forms, a monoclinic cis- and a triclinic trans-isomer. The structural data are compared and discussed with the complexes of inner coordination spheres: Pt(η2-P2L)(XL)2 (X = O, N, CN, BL, Cl, SL, SeL, Br, or I) and Pt(η2-P2L)(η2-X2L) (X = OL, NL, SL or SeL). Graphical Abstract

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PtP2Si2衍生物中的有机膦-结构方面

摘要本文对以Pt(η2-P2L)(SiL)2、Pt(η2-P2L)(η2-Si2L)和Pt(η2-P,SiL)2为内配位球的单体铂(II)配合物的结构数据进行了分类和分析。这些配合物以三种晶体体系结晶:单斜晶(8例)、三斜晶(4例)和正交晶(4例)。通过同形P、P与两个单齿Si配体的结合，建立了Pt(II)原子周围的畸变方平面环境;同型pp与同型Si,Si给体或异型p,Si给体。螯合配体形成的金属环的角度为:65.0°(SiOSi) < 83.1°(SiC2Si) < 85.2°(PC2P) < 88.8°(siisi2si))。Pt(η2-P2L)·(SiL)2配合物中Pt- p和Pt- si的平均键距分别为2.319和2.365 Å;在Pt(η2-P2L)(η2-Si2L)中，η值分别为2.316和2.360 Å。配合物[Pt{η2-Me2P(C2B10H10)SiMe2}2]以单斜顺式和三斜反式两种异构体形式存在。并与内配位球配合物Pt(η2-P2L)(XL)2 (X = O、N、CN、BL、Cl、SL、SeL、Br或I)和Pt(η2-P2L)(η2-X2L) (X = OL、NL、SL或SeL)的结构数据进行了比较和讨论。图形抽象

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Phosphorus Sulfur and Silicon and The Related Elements

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