Synthesis and substitution reactions of a heterodimetallic molybdenum-manganese complex, [MoMn(μ-H)(μ-PPh2) (η5-C5H5)(CO)6]; X-ray crystal structure of [MoMn(μ-H)(μ-PPh2)(η5-C 5H5)(CO)4(dppm-PP′)]

Andrew D. Horton, Martin J. Mays, Paul R. Raithby

Research output: Contribution to journalArticlepeer-review

Abstract

The photolytic reaction of [MoMn(η5-C5H 5)(CO)8] with PPh2H gives [MoMn(μ-H)(μ- PPh2)(η5-C5H5)(CO)6] (1) and [Mo2(μ-H)(μ-PPh2)(η5-C 5H5)(CO)4] as the major products. Complex (1) reacts photolytically with two-electron donor ligands, L, to give the substituted complexes [MoMn(μ-H)(μ-PPh2)(η5- C5H5)(CO)5L] [L = P(OMe)3 (2a), PPh3 (2b), or CNCH2Ph (2c)], [MoMn(μ-H)(μ-PPh 2)(η5-C5H5)(CO) 4L2] [L = P(OMe)3 (3a), L2 = dppm-PP′ (3b) (dppm = Ph2PCH2PPh2), or L = CNCH2Ph (3c)], and [MoMn(μ-H)(μ-PPh2)(μ-L) (η5-C5H5)(CO)4] [L = dppm-PP′ (4)]. An n.m.r. study reveals that the ligands L in complexes (2) and (3) have replaced respectively one or two carbonyl groups on the manganese atom. This has been confirmed for (3b) by X-ray analysis. Complex (4), an isomer of (3b) in which the dppm ligand adopts a bridging rather than a chelating bonding mode, is formed irreversibly from (3b) on photolysis.

Original languageEnglish
Pages (from-to)1557-1563
Number of pages7
JournalJournal of the Chemical Society, Dalton Transactions
Issue number6
DOIs
Publication statusPublished - 31 Dec 1987

ASJC Scopus subject areas

  • General Chemistry

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