TY - JOUR
T1 - Alkyl and hydrido derivatives of tetrakis(trimethylphosphine)osmium(II). X-Ray crystal structure of the metallacycle Os[(CH2)2SiMe2](PMe3)4
AU - Behling, Torsten
AU - Girolami, Gregory S
AU - Wilkinson, Geoffrey
AU - Somerville, Richard G.
AU - Hursthouse, Michael B.
PY - 1984
Y1 - 1984
N2 - The interaction of the osmium acetato-complexes trans-OsII(O2CMe)2(PMe3)4 and OsIII2Cl2(μ-O2CMe)4 with alkylating agents in the presence of trimethylphosphine has led to the isolation of cis-OsMe2(PMe3)4, Os[(CH2)2SiMe2](PMe3)4, OsCl(CH2PMe2)(PMe3)3, and Os(CH2C6H4)(PMe3)4. The hydride cis-OsH2(PMe3)4 has been obtained from K2[OsO2(OMe)4] by interaction with PMe3 and methanol. The 1H, 13C-{1H}, and 31P-{1H} n.m.r. spectra of the compounds are discussed. The X-ray crystal structure of the metallacycle Os[(CH2)2SiMe2](PMe3)4 has been determined, and the [graphic omitted] ring found to be flat. The Os-C distances are 2.24(1) Å, while the Os-P distances of 2.32 (trans to C) and 2.35 Å (trans to P) indicate the trans influence of the metallacyclobutane is low compared to that of the σ alkyl groups.
AB - The interaction of the osmium acetato-complexes trans-OsII(O2CMe)2(PMe3)4 and OsIII2Cl2(μ-O2CMe)4 with alkylating agents in the presence of trimethylphosphine has led to the isolation of cis-OsMe2(PMe3)4, Os[(CH2)2SiMe2](PMe3)4, OsCl(CH2PMe2)(PMe3)3, and Os(CH2C6H4)(PMe3)4. The hydride cis-OsH2(PMe3)4 has been obtained from K2[OsO2(OMe)4] by interaction with PMe3 and methanol. The 1H, 13C-{1H}, and 31P-{1H} n.m.r. spectra of the compounds are discussed. The X-ray crystal structure of the metallacycle Os[(CH2)2SiMe2](PMe3)4 has been determined, and the [graphic omitted] ring found to be flat. The Os-C distances are 2.24(1) Å, while the Os-P distances of 2.32 (trans to C) and 2.35 Å (trans to P) indicate the trans influence of the metallacyclobutane is low compared to that of the σ alkyl groups.
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U2 - 10.1039/DT9840000877
DO - 10.1039/DT9840000877
M3 - Article
AN - SCOPUS:37049111288
SP - 877
EP - 881
JO - Dalton Transactions
JF - Dalton Transactions
SN - 1470-479X
IS - 5
ER -