DIENYL)-2,2-TRANS-BIS(TRIPHENYLPHOSPHINE)DIRHENIUM

The title compound {systematic name: tricarbonyl-1 kappa C, 2 kappa(2) C-mu-formato(2-)-1 kappa C:2 kappa(2) O,O'-nitrosyl-1 kappa N-[1(eta(5 ))-pentamethylcyclopentadienyl] bis(triphenyl-phosphine)-2 kappa(2)P-d irhenium}, [Re-2(CO2)(NO)(C10H15)-(C18H15P)(2)(CO)(3)], has a carbon d ioxide ligand bridged between two octahedral rhenium centers. The pres ence of two triphenylphosphine ligands, which are trans to each other on Re(2), alters the orientation of the bridging CO2 ligand relative t o ligands bound to Re(1) in this compound as compared with the analog having a single triphenylphosphine ligand on Re(2).