摘要:
The complexes [ReCl3(H2O){NH(OPPh(2))PPh(2)-P,O}] 1. [ReCl4{NH(OPPh(2))PPh(2)-P,O}] 3 and [AsPh(4)][ReCl4{N(OPPh(2))PPh(2)-P,O}] 4 were obtained by treatment of [AsPh(4)][ReOCl4] with NH(PPh(2))(2) under different experimental conditions. Their structures were determined by X-ray crystallography. In all complexes the co-ordination is nearly octahedral where a molecule of the ligand binds to rhenium through a phosphorus and oxygen. The Re-O distances. which range from 2.054(3) to 2.071(6) Angstrom indicate the presence of neutral or partially negatively-charged oxygens. The Re-Cl bond distances trans to oxygen are strongly related to the oxygen charge and hybridization.