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

Su-Kyung Lee , Olivier Jeannin (1) , Marc Fourmigué (1) , Wooyoung Suh , Dong-Youn Noh

1 ISCR - Institut des Sciences Chimiques de Rennes

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 TCNQF4radical dot− 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.

Keywords: Heteroleptic P2Pt(II)S2 complex; Aryl thiolate; {Pt2(μ-SR)2} square motif; Oxidative dimerization; X-ray crystal structure

Domains: Chemical Sciences; Material chemistry

Su-Kyung Lee, Olivier Jeannin, Marc Fourmigué, Wooyoung Suh, Dong-Youn Noh. Oxidative access to flexible {Pt2(μ-SAr)2} square motifs from platinum thiolato complexes with chelating diphosphine. Journal of Organometallic Chemistry, 2012, 716, pp.237-244. ⟨10.1016/j.jorganchem.2012.07.001⟩. ⟨hal-00843761⟩