Hg. Ang et al., TRIOSMIUM CARBONYL CLUSTER DERIVATIVES CONTAINING PENTAMERIC PHENYL CYCLOPOLYPHOSPHINE, Journal of organometallic chemistry, 485(1-2), 1995, pp. 10-13
The reactions of the pentaphenylcyclopentaphosphine with [Os-3(CO)(10)
(NCCH3)(2)] afforded a pair of inversion isomers, (1) and (2). [Os-3(C
O)(11)(C6H5P)(5)] (3) and [{Os-3(CO)(11)}(2)(C6H5P)(5)] (4) were obtai
ned by the treatment of the same ligand with [Os-3(CO)(11)(NCCH3)]. Th
e four new triosmium clusters have been shown by X-ray crystallography
to contain an intact cyclopolyphospine ring in each case.