Oxidative access to flexible {Pt2(μ-SAr)2} square motifs from platinum thiolato complexes with chelating diphosphine
摘要:
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 benzene-thiolate (BT) and 3,5-dimethylbenzenethiolate (DMBT). The structurally characterized neutral (P2) Pt(SAr)(2) complexes afford, upon oxidation with TCNQF(4), dicationic bimetallic Pt(II) complexes formulated as [(P2)Pt(mu-SAr)(2)Pt(P-2)](2+), characterized by a flexible {Pt-2(mu-SAr)(2)} square motif. The magnetic properties of the TCNQF(4)(-) salts of these bimetallic Pt(II) complexes are determined from susceptibility measurements and a tentative rationale for the formation of such {Pt-2(mu-SAr)(2)} square complexes are provided, based on an original oxidative dimerization process. (C) 2012 Elsevier B. V. All rights reserved.