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|標題:||Reactions of sulfido-tricobalt cluster (mu(3)-S)CO)(7)(mu-C,N-C5H4N) with diphosphine ligands and (mu(3)-S)Co-3(CO)(7)(mu-S,P-SPMe2) towards diphenyl-2-pyridylphosphine||作者:||Hong, F.E.
|關鍵字:||carbonylation;sulfido-tricobalt cluster;DPPM;DPPE;diphenyl-2-pyridylphosphine;organometallic chalcogen complexes;molecular-structure;binuclear;complexes;sulfur complexes;2-(diphenylphosphino)pyridine;cobalt;chemistry;sulphide;system||Project:||Journal of Organometallic Chemistry||期刊/報告no：:||Journal of Organometallic Chemistry, Volume 677, Issue 1-2, Page(s) 80-88.||摘要:||
Reaction of sulfido-tricobalt cluster, (mu(3)-S)Co-3(CO)(7)(mu-S,P-SPMe2) (8), with PPh2PY in THF at 90 degreesC for 6 h gave two compounds, (mu(3)-S)Co-3(CO)(5)(mu-S,P-SPMe2)(mu-P,N-PPh2PY) (9) and (mu(3)-S)Co-3(CO)(4)(mu-S,P-SPMe2)(mu-P,N-PPh2PY)(PPh2PY) (10). Both compounds, 9 and 10, were well characterized by spectroscopic means as well as X-ray crystal structure determination. The hybrid bidentate PPh2PY ligand bridges two cobalt centers in 9 (or 10) through both phosphorus and nitrogen atoms. Besides the bridging PPh2PY ligand, one more additional coordinating PPh2PY ligand attached through phosphorous was observed at 10. Treatment of another sulfido-tricobalt cluster (mu(3)-S)Co-3(CO)(7)(mu-C,N-C5H4N) (2a) with bis(diphenylphosphino)methane (DPPM) in THF at 25 degreesC for 2 h gave two DPPM bridged complexes (mu(3)-S)Co-3(CO)(5)(mu-C,N-C5H4N)(mu-P,P'-DPPM)] (11) and (mu(3)-S)Co-3(CO)(5)[(mu-C(=O),N-C5H4N(C=O))(mu-P,P'-DPPM)] (12) where as bis(diphenylphosphino)ethane (DPPE) gave two DPPE bridged isomeric complexes (mu(3)-S)Co-3(CO)(5)[(mu-C(=O),N-C5H4N(C=O))(mu-P,P'-DPPE)] (13a and 13b). The X-ray structural analyses of 12 and 13b revealed that carbonylation occurred at the Co-C(pyridyl) bond. (C) 2003 Elsevier Science B.V. All rights reserved.
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