TY - JOUR
T1 - 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′)]
AU - Horton, Andrew D.
AU - Mays, Martin J.
AU - Raithby, Paul R.
PY - 1987/12/31
Y1 - 1987/12/31
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=37049087213&partnerID=8YFLogxK
U2 - 10.1039/DT9870001557
DO - 10.1039/DT9870001557
M3 - Article
AN - SCOPUS:37049087213
SN - 1472-7773
SP - 1557
EP - 1563
JO - Journal of the Chemical Society, Dalton Transactions
JF - Journal of the Chemical Society, Dalton Transactions
IS - 6
ER -