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Heterobimetallic platinum–bismuth aggregates derived from [Pt₂(μ-S)₂(PPh₃)₄]

Abstract
The metalloligand [Pt₂(μ-S)₂(PPh₃)₄] reacts with Bi(S₂CNEt₂)₃ or Bi(S₂COEt)₃ in methanol to produce the orange cationic adducts [Pt₂(μ-S)₂(PPh₃)₄Bi(S₂CNEt₂)₂]⁺ and [Pt₂(μ-S)₂(PPh₃)₄Bi(S₂COEt)₂]⁺, respectively, isolated as their hexafluorophosphate salts. An X-ray structure determination on [Pt₂(μ-S)₂(PPh₃)₄Bi(S₂CNEt₂)₂]PF₆ reveals the presence of a six-coordinated bismuth centre with an approximately nido-pentagonal bipyramidal coordination geometry. Fragmentation pathways for both complexes have been probed using electrospray ionisation mass spectrometry; ions [Pt₂(μ-S)₂(PPh₃)₂Bi(S₂CXEtn)₂]⁺ (X = O, n = 1, X = N, n = 2) are formed by selective loss of two PPh₃ ligands, and at higher cone voltages the species [(Ph₃P)PtS₂Bi]⁺ is observed. Ions formed by loss of CS₂ are also observed for the xanthate but not the dithiocarbamate ions.
Type
Journal Article
Type of thesis
Series
Citation
Henderson, W., Nicholson, B.K., Zhang, H. & Hor, T.S.A. (2006). Heterobimetallic platinum–bismuth aggregates derived from [Pt₂(μ-S)₂(PPh₃)₄]. Inorganica Chimica Acta, 359(1), 221-227.
Date
2006-01-01
Publisher
Elsevier BV
Degree
Supervisors
Rights
This article is published in the journal Inorganica Chimica Acta, (c) 2005 Elsevier B.V.