Stepwise construction of [Os6(CO)18(µ6-P)]–, a hexanuclear osmium cluster monoanion with trigonal-prismatic co-ordination for phosphorus: X-ray crystal structures of [Os6(µ-H)2(CO)20(MeCN)(µ3-PH)] and [PPh3Me][Os6(CO)18(µ6-P)] | Publicación