COMPLEXES OF A MONO-P-DONOR CROWN ETHER HYBRID LIGAND WITH POTENTIAL FOR THE ACTIVATION OF A COORDINATED CARBON MONOXIDE VIA SELECTIVE CATION BINDING

Article abstract of DOI:10.1016/0022-328X(83)80229-0

Derivatives of 1,10-dioxa-4,7-diaza-11-phosphacycloundecane are shown to function as mono-P-donor crown ether ligands.When complexed to molybdenum or tungsten in the form of M(CO)5P derivatives they provide an additional incentive for nucleophilic attack (RLi reagents) at the C-atom of a coordinated CO via selective Li⁺ ion binding by the benzoylate/acylate product.The structure of one of these products, cis-<(OEt)> - ^-Mo(CO)4(PhCO) -> Li⁺, has been determined by X-ray crystallography.