Within this study, coordination properties of the cyclic diphosphine 1,2,3,4-tetrahydro-1,4-diphenyl-1,4-benzodiphosphinine (bedip) are investigated, through the preparation of neutral and cationic Pt(II), Pt(IV) and Pd(II) complexes. The diphosphine acts as bridging ligand in the neutral Pt(II) and Pd(H) complexes, affording [MX(CH3)(mu-bedip)](2) (X = Cl, Br, I, CH3) species. Chelation is observed in all the remaining complexes. The molecular structures of [PtX(CH3)(mu-bedip)](2) (X = Br, I) and [PtI(CH3)(3)(bedip)] are also determined. (c) 2007 Elsevier B.V. All rights reserved. RI De Felice, Vincenzo/F-4702-2012
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