A structural and spectroscopic study of tris-aryl substituted R3PI2 adducts

被引：15

作者：

Barnes, Nicholas A. ^{[1
]}

Godfrey, Stephen M. ^{[1
]}

Khan, Rana Z. ^{[1
]}

Pierce, Amber ^{[1
]}

Pritchard, Robin G. ^{[1
]}

机构：

[1] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

来源：

POLYHEDRON | 2012年 / 35卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

Phosphines; Charge transfer adducts; Iodine; Ligand conformation; Crystal packing; MULTIPLE PHENYL EMBRACES; SOLID-STATE; CRYSTAL SUPRAMOLECULARITY; PH(4)P(+) CATIONS; COMPLEXES; IODINE; TRIARYLPHOSPHINES; DIIODINE; LIGANDS; SPECTRA;

D O I：

10.1016/j.poly.2011.12.023

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of Ar3PI2 adducts [Ar = (o-OCH3C6H4), (m-OCH3C6H4), (p-OCH3C6H4), (o-SCH3C6H4), (p-SCH3C6H4). (m-FC6H4), (P-FC6H4), (p-CIC6H4)] have been synthesized via the 1:1 reactions of Ar3P with di-iodine. The P-31{H-1) NMR spectra of a series of Ar3PI2 adducts has been examined to resolve previous inconsistent reports. Ar3PI2 adducts do not ionize to [Ar3PI]1 in CDCl3, and in many cases the molecular Ar3PI2 "spoke" adduct is stable in solution, with the degree of stability being highly dependent on the nature of the aryl group. The structures of the majority of these adducts have been established by X-ray diffraction studies. Whilst P-I and I-I bond lengths are primarily influenced by electronic effects, steric and crystal packing effects may also have an influence, as shown by the different polymorphs of (p-FC5H4)(3)Pl(2), where a change in the conformation of the aryl groups in one of the molecules results in a lengthening of the P-I bond and shortening of the I-I bond. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：31 / 46

页数：16

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