Crystal structure of homodinuclear platinum complex containing a metal-metal bond bridged by hydride and phosphide ligands.

Sakina Ouis,Corinne Bailly,Djamil Azzedine Rouag,Lamia Bendjeddou

doi:10.1107/s205698901800868x

Abstract

In the title compound, μ-di-phenyl-phosphido-μ-hydrido-bis-[bromido-(tri-phenyl-phosphane-κP)platinum(II)] diethyl ether monosolvate, [Pt2Br2(C12H10P)H(C18H15P)2]·C4H10O or [Pt2(μ-H)(μ-PPh2)Br2(PPh3)2]·(C2H5)2O, the PtII atoms are coordinated in a distorted square-planar arrangement, with one hydrido and one phosphido ligand bridging in a trans position. In the lattice, C-H⋯·O and C-H⋯π interactions are present. This complex has a total number of 32 electrons, 16 electrons for each PtII atom. One of the Br atoms is disordered over two positions in a 0.92:0.08 ratio.

Highlights

Chemical contextTransition metal hydrides play a central role in many homogeneous catalytic reactions (Bertolasi et al, 1993; Clegg et al, 1996) and are very important in hydrogenation or hydroformylation
In the title compound, -diphenylphosphido--hydrido-bis[bromido(triphenylphosphane-P)platinum(II)] diethyl ether monosolvate, [Pt2Br2(C12H10P)H(C18H15P)2]ÁC4H10O or [Pt2(-H)(-PPh2)Br2(PPh3)2]Á(C2H5)2O, the PtII atoms are coordinated in a distorted square-planar arrangement, with one hydrido and one phosphido ligand bridging in a trans position
We report here the synthesis and structural analysis of a new hydrido-bridged diplatinum complex, -diphenylphosphido--hydrido-bis[bromido(triphenylphosphane-P)platinum(II)] diethyl ether monosolvate

Summary

Chemical context

Transition metal hydrides play a central role in many homogeneous catalytic reactions (Bertolasi et al, 1993; Clegg et al, 1996) and are very important in hydrogenation or hydroformylation. Their characterization is commonly carried out by NMR spectroscopy, X-ray analysis or neutron diffraction (Ciriano et al, 1978). One of the attractive features of this dinuclear complex is that it is doubly bridged by hydrido and phosphido ligands in a trans fashion. The bridging of metal–metal-bonded homodinuclear complexes with a phosphido ligand allows the stabilization of the metal– metal bond. He et al, 1992; Comte et al, 1997; Lavastre et al, 1997; Mohamed et al, 2015)

Structural commentary

Synthesis and crystallization

Database survey

Refinement

Funding information