Carbon dioxide-transition metal complexes. IV. New Ni(0)CO2 complexes with chelating diphosphines: influence of PNiP angle on complex stabilities
摘要:
The reaction between Ni(O) complexes (dp) (dp = 1,2-bis(dicyclohexylphosphino)ethane, 1,3-bis(dicyclohexylphosphino) propane, 1,4-bis(dicyclohexylphosphino)butane; dcpe, dcpp, dcpb, respectively) and carbon dioxide is described. The influence of the P-Ni-P bond angle on the stability of the corresponding adducts is discussed. The reactions of Ni(dcpp)CO2 and Ni(dcpb)CO2 with dioxygen are also described.
New nickel(O) complexes with bulky diphosphine ligands
摘要:
The synthesis and characterization of new complexes of formula Ni(dp), Ni(dp)C7H8 (dp = 1, 2-bis-dicyclohexylphosphino)ethane [dcpe]; 1,3-bis(dicyclohexylphosphino)propane [dcpp]; 1,4-bis(dicyclohexylphosphino) butane [dcpb]), Ni2(dcpe)3, Ni2(dcpb)3, Ni(dcpe)2 and Ni(depe)2 (depe = 1,2-bis(diethylphosphino)-ethane) are described. The electronic spectra of these complexes are discussed.