Synthesis and properties of new ditertiary stibines based upon o-, m- or p-xylyl and m- or p-phenylene backbones and their complexes with tungsten, iron and nickel carbonyls


Levason, William, Matthews, Melissa L., Reid, Gillian and Webster, Michael (2004) Synthesis and properties of new ditertiary stibines based upon o-, m- or p-xylyl and m- or p-phenylene backbones and their complexes with tungsten, iron and nickel carbonyls. Dalton Transactions, 2004, (1), 51-58. (doi:10.1039/b312083j).

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Original Publication URL: http://dx.doi.org/10.1039/b312083j

Description/Abstract

High yield syntheses for 1,2-, 1,3-, and 1,4-xylyl distibines (1,2-C6H4(CH2SbMe2)(2), 1,3-C6H4(CH2SbMe2)(2), 1,4-C6H4(CH2SbMe2)(2), respectively) from Me2SbCl (conveniently made in situ from Me2PhSb and HClgas) and the appropriate di-Grignard are reported. The 1,3- and 1,4-phenylene distibines, 1,3-C6H4(SbMe2)(2) and 1,4-C6H4(SbMe2)(2), were made similarly. The new ligands have been characterised by mass spectrometry, H-1 and C-13{H-1} NMR spectroscopy, and by the preparation of methiodide derivatives. The crystal structures of 1,4-C6H4(CH2SbMe2)(2) and [1,3-C6H4(CH2SbMe3)(2)] I-2 have been determined. The synthesis of 1,2-C6H4( CH2SbPh2)(2) has been achieved similarly in modest yield and the distibine converted into the tetra-iodo-derivative 1,2-C6H4(CH2SbPh2I2)(2). The coordination modes available to these ligands have been probed by the synthesis and characterisation of complexes with nickel, iron and tungsten carbonyls. The crystal structure of [{Fe(CO)(4)}(2){ {mu-1,3-C6H4(CH2SbMe2)(2)}] has been determined. The spectroscopic properties of these carbonyl derivatives have been compared with those of complexes of other antimony ligands, and in some cases with diphosphine and diarsine complexes, to probe the electronic properties of the new ligands.

Item Type: Article
ISSNs: 1477-9226 (print)
Related URLs:
Keywords: distibinomethane ligands, crystal-structures, proprietes vibrationnelles, coordination chemistry, molybdene carbonyle, tertiary, derivatives, halides, sb, di
Subjects: T Technology > TP Chemical technology
Q Science > QD Chemistry
Divisions: University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 20272
Date Deposited: 20 Feb 2006
Last Modified: 27 Mar 2014 18:10
URI: http://eprints.soton.ac.uk/id/eprint/20272

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