![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The pentacoordinate phosphorus molecule, cyclenphosphorane (cyclenPH), is found to be a useful and unique ligand in transition-metal chemistry. It reacts with metal-carbonyl dimers to cleave the dimers and yield covalent phosphoranide-metal complexes and metal carbonyl anions. With cis-Cl2Pt(PPh3)2, two phosphoranide-metal complexes are formed, one ionic and the other covalent. A unique reaction occurs with ClRh(PPh3)3 where, initially, a product is obtained in which one of the P-N bonds of the cyclenP moiety is cleaved. This species undergoes a three-fragment oxidative addition of CH2Cl2 to reform the pentacoordinate phosphorus and also form a novel P-N-C-Rh metallocycle.