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1,3-Bis(thiophosphinoyl)indene: A Unique and Versatile Scaffold for Original Polymetallic Complexes

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posted on 04.07.2011, 00:00 by Noel Nebra, Nathalie Saffon, Laurent Maron, Blanca Martin−Vaca, Didier Bourissou
The coordination of tridentate ligands featuring lateral coordination sites prone to acting as bridging ligands was explored with the aim of obtaining original polymetallic species in a straightforward and controlled manner. Accordingly, the 2-indenylidene chloropalladate [{Ind(Ph2PS)2}PdCl] was found to behave as a κ2-C,S bidentate ligand toward metal fragments, giving access to homo- and heteropolymetallic complexes. X-ray diffraction analyses reveal the presence of short metal–metal contacts in all of these complexes. Density functional theory calculations unambiguously substantiate that the metals engage in unusual d8···d8 interactions with a quasi-perpendicular arrangement of their coordination planes.