Observation of Te ••• π and X ••• X bonding in para-substituted diphenyltellurium dihalides, (p-Me2NC6H4)(p-YC6H4)TeX2 (X = Cl, Br, I; Y=H, EtO, Me2N)

被引：31

作者：

Beckmann, J

Dakternieks, D

Duthie, A

Mitchell, C

Schürmann, M

机构：

[1] Deakin Univ, Ctr Chiral & Mol Technol, Geelong, Vic 3217, Australia

[2] Univ Dortmund, Lehrstuhl Anorgan Chem 2, D-44221 Dortmund, Germany

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 2005年 / 58卷 / 02期

关键词：

D O I：

10.1071/CH04268

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The supramolecular association of the previously described para-dimethylaminophenyl-substituted diorganotellurium dihalides (p-Me2NC6H4)(2)TeX2 (X = Cl ( 1), Br ( 2), I ( 3)) and (p-Me2NC6H4) RTeCl2 (R= Ph ( 4), p-EtOC6H4 ( 5)), was investigated by X-ray crystallography. Unlike almost all other structurally characterized diorganotellurium dihalides, (p-Me2NC6H4)(2)TeX2 (X = Cl ( 1), Br ( 2), I ( 3)) reveal no secondary Te ... X interactions, but X ... X interactions. The structure of (p-Me2NC6H4) PhTeCl2 ( 4) resembles that of Ph2TeCl2 and shows one secondary Te ... Cl contact, whereas (p-Me2NC6H4)(p-EtOC6H4) TeCl2 ( 5) exhibits neither secondary Te ... Cl nor Cl ... Cl interactions. The unusual structural characteristics of 1 - 5 are attributed to the occurrence of intermolecular Te ... pi and pi...pi contacts associated with quinoid pi-electron delocalization across the para-dimethylaminophenyl ( 1 - 5) and para-ethoxyphenyl ( 5) groups.

引用

页码：119 / 127

页数：9

共 42 条

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