Research output: Contribution to journal › Article › peer-review
Reactions of diphenylpyridylphosphine with H2Os 3(CO)10 and H4Ru4(CO)12, P-C bond splitting in the coordinated ligand and isolation of the oxidative addition products. / Ponomarenko, Vadim I.; Pilyugina, Tatiana S.; Khripun, Vassily D.; Grachova, Elena V.; Tunik, Sergey P.; Haukka, Matti; Pakkanen, Tapani A.
In: Journal of Organometallic Chemistry, Vol. 691, No. 1-2, 01.01.2006, p. 111-121.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Reactions of diphenylpyridylphosphine with H2Os 3(CO)10 and H4Ru4(CO)12, P-C bond splitting in the coordinated ligand and isolation of the oxidative addition products
AU - Ponomarenko, Vadim I.
AU - Pilyugina, Tatiana S.
AU - Khripun, Vassily D.
AU - Grachova, Elena V.
AU - Tunik, Sergey P.
AU - Haukka, Matti
AU - Pakkanen, Tapani A.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - The reactions of diphenylpyridylphosphine ligand with H2Os 3(CO)10 and H4Ru4(CO)12 were studied. It was found that the thermodynamic products of these reactions, (μ-H)Os3(CO)9(μ3,κ2- PhP(2-C5H4N)) (2) and H3Ru4(CO) 10(μ3,κ2-PhP(2-C5H 4N)) (4), are formed through the oxidative addition of a P-Ph bond in the coordinated ligand and subsequent reductive elimination of benzene. In the case of triosmium cluster an unusually stable intermediate compound, (μ-H)2Os3(CO)8(μ3, κ2-PhP(2-C5H4N))(Ph) (1), containing cis hydride and σ-bonded phenyl was isolated and fully characterized. This cluster eliminates benzene to give (2) only under heating above 50 °C. Reaction of H4Ru4(CO)12 with diphenylpyridylphosphine gives first the H4Ru4(CO) 10(μ,κ2-Ph2P(2-C5H 4N)) cluster (3) with a bridging (P,N) coordination of the starting ligand, which easily converts into the phosphide cluster (4) at room temperature. The structures of the clusters (1)-(4) were established using 1H and 31P NMR spectroscopy and X-ray crystallography. Variable temperature 1H NMR study of (3) and (4) showed that the hydride environment in (3) is stereochemically nonrigid and complete exchange of all hydrides was observed at room temperature. The cluster (4) exists in solution as an equilibrium mixture of two isomers with different disposition of hydrides relative to the bridging pyridylphosphide moiety.
AB - The reactions of diphenylpyridylphosphine ligand with H2Os 3(CO)10 and H4Ru4(CO)12 were studied. It was found that the thermodynamic products of these reactions, (μ-H)Os3(CO)9(μ3,κ2- PhP(2-C5H4N)) (2) and H3Ru4(CO) 10(μ3,κ2-PhP(2-C5H 4N)) (4), are formed through the oxidative addition of a P-Ph bond in the coordinated ligand and subsequent reductive elimination of benzene. In the case of triosmium cluster an unusually stable intermediate compound, (μ-H)2Os3(CO)8(μ3, κ2-PhP(2-C5H4N))(Ph) (1), containing cis hydride and σ-bonded phenyl was isolated and fully characterized. This cluster eliminates benzene to give (2) only under heating above 50 °C. Reaction of H4Ru4(CO)12 with diphenylpyridylphosphine gives first the H4Ru4(CO) 10(μ,κ2-Ph2P(2-C5H 4N)) cluster (3) with a bridging (P,N) coordination of the starting ligand, which easily converts into the phosphide cluster (4) at room temperature. The structures of the clusters (1)-(4) were established using 1H and 31P NMR spectroscopy and X-ray crystallography. Variable temperature 1H NMR study of (3) and (4) showed that the hydride environment in (3) is stereochemically nonrigid and complete exchange of all hydrides was observed at room temperature. The cluster (4) exists in solution as an equilibrium mixture of two isomers with different disposition of hydrides relative to the bridging pyridylphosphide moiety.
KW - Cluster compounds
KW - Osmium
KW - P Ligands
KW - Ruthenium
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=28844449358&partnerID=8YFLogxK
U2 - 10.1016/j.jorganchem.2005.08.007
DO - 10.1016/j.jorganchem.2005.08.007
M3 - Article
AN - SCOPUS:28844449358
VL - 691
SP - 111
EP - 121
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
SN - 0022-328X
IS - 1-2
ER -
ID: 36017140