Bis(dimethyIphosphino)methan-Nickel(0)-Komplexe / Bis(dimethylphosphino)methane-Nickel(0) Complexes
Open Access
- 1 April 1987
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 42 (4) , 421-424
- https://doi.org/10.1515/znb-1987-0406
Abstract
The reaction of tris(ethene)nickel(0) with stoichiometric amounts of bis(dimethylphos-phino)methane (dmpm) in ether at low temperature affords the yellow crystalline, dinuclear complexes (dmpm)Ni2(C2H4)4 (1) and (dmpm)2Ni2(C2H4)2 (2). 2 reacts with ethyne to yield (dmpm)2Ni2(C2H2)2 (3). When 2 is treated with CO at -40 °C the primary product is (dmpm)2Ni2(CO)2(μ-CO) (4). At 20 °C 4 is converted by additional CO into (dmpm)2Ni2(CO)4 (5), which has already been characterized as the reaction product of Ni(CO) 4 with dmpm. In compounds 1-5 the bidentate dmpm acts as a bridging and not as a chelating ligand. The structures of complexes 1-4 were assigned on the basis of their 13C and 31P NMR spectra.Keywords
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