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Oxidative access to flexible {Pt2(μ-SAr)2} square motifs from platinum thiolato complexes with chelating diphosphine

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
716
Identifiers
DOI: 10.1016/j.jorganchem.2012.07.001
Keywords
  • Heteroleptic P2Pt(Ii)S2Complex
  • Aryl Thiolate
  • {Pt2(μ-Sr)2} Square Motif
  • Oxidative Dimerization
  • X-Ray Crystal Structure

Abstract

Abstract Platinum(II) aryl thiolate complexes formulated as (P2)Pt(SAr)2 are prepared from the chelating bis(diphenylphosphino)dimethyltetrathiafulvalene (P2), with aryl thiolate ligands (SAr), such as benzenethiolate (BT) and 3,5-dimethylbenzenethiolate (DMBT). The structurally characterized neutral (P2)Pt(SAr)2 complexes afford, upon oxidation with TCNQF4, dicationic bimetallic Pt(II) complexes formulated as [(P2)Pt(μ-SAr)2Pt(P2)]2+, characterized by a flexible {Pt2(μ-SAr)2} square motif. The magnetic properties of the TCNQF4− salts of these bimetallic Pt(II) complexes are determined from susceptibility measurements and a tentative rationale for the formation of such {Pt2(μ-SAr)2} square complexes are provided, based on an original oxidative dimerization process.

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