Issue 32, 2006
From the journal:

Dalton Transactions

Synthesis, spectroscopic and structural characterization of tertiary phosphine tellurium dihalides Et3PTeX2 (X = Cl, Br, I)†

Jari Konua  and  Tristram Chivers*a  

* Corresponding authors

a Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada
E-mail: chivers@ucalgary.ca
Fax: +1-403-289-9488
Tel: +1-403-220-5741

Abstract

The reactions of triethylphosphine telluride with SO2Cl2 or I2 produced the first structurally characterized tellurium-containing tertiary phosphine chalcogen dihalides, Et3PTeCl2 and Et3PTeI2, respectively, in good yields. The corresponding dibromide, Et3PTeBr2, was obtained by an in situ reaction between Et3PTeCl2 and two equivalents of Me3SiBr. This series of compounds has been characterized in the solid state by X-ray structural analyses and in solution by multinuclear NMR spectra. The structures of Et3PTeX2 (X = Cl, Br, I) all show a T-shaped geometry around tellurium with weak Te⋯halogen interactions giving rise to centrosymmetric dimers. NMR data indicate that Et3PTeI2 exhibits the weakest P–Te bond in solution. The ionic complexes, [(Et3PO)2H]2[Te2I6] and [(Et3PO)2H]2[TeI4], were isolated from THF solutions of Et3PTeI2 and characterized by X-ray structural determinations.

Graphical abstract: Synthesis, spectroscopic and structural characterization of tertiary phosphine tellurium dihalides Et3PTeX2 (X = Cl, Br, I)

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Article information

DOI
https://doi.org/10.1039/B608133A
Article type
Paper
Submitted
08 Jun 2006
Accepted
16 Jun 2006
First published
28 Jun 2006

Dalton Trans., 2006, 3941-3946

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Synthesis, spectroscopic and structural characterization of tertiary phosphine tellurium dihalides Et3PTeX2 (X = Cl, Br, I)

J. Konu and T. Chivers, Dalton Trans., 2006, 3941 DOI: 10.1039/B608133A

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