Methods for attaching metal-capped sp carbon chains to metal clusters: Synthesis, structure and reactivity of rhenium-triosmium carbon complexes[(eta(5)-C(5)Me(5))Re(NO)(PPh(3))(CC)(n)Os-3(CO)(10)H]
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Reactions of [(5-C5Me5)Re(NO)(PPh 3){(CC)nH}] and [Os3(CO)10(NCMe)2] give the title Re(CC)nOs3 complexes (n = 1-3, 83-61%); a crystal structure (n = 1), and IR and NMR properties, indicate contributions by neutral Re(CC)n-(Os3) and zwitterionic +Re=(C=C)n=(Os3)- resonance forms.
