| Autor: |
Termaten, Arjan T., Nijbacker, Tom, Schakel, Marius, Lutz, Martin, Spek, Anthony L., Lammertsma, Koop |
| Zdroj: |
Chemistry - A European Journal; May 2003, Vol. 9 Issue: 10 p2200-2208, 9p |
| Abstrakt: |
Novel, very stable ruthenium and osmium containing terminal phosphinidene complexes [(η6‐Ar)(L)MPMes*] (Ar=benzene, p‐cymene; L=PR3, CO, and RNC) have been prepared by dehydrohalogenation of novel [(η6‐Ar)MX2(PH2Mes*)] complexes in the presence of a stabilizing ligand. Xray crystal structures are reported for [(η6‐C6H6)(PPh3)RuPMes*] (9) and [(η6‐pCy)(PPh3)OsPMes*] (4). Dehydrohalogenation in the absence of a stabilizing ligand resulted in the new Pspiroannulated Ru2P2‐ring structure 16. Dehydrohalogenation in the presence of but‐2‐yne gave a novel phosphaallyl complex [(η6‐Ar)Ru(η3‐R2PC(Me)CHMe)] 26, for which an Xray crystal structure is reported. The mechanism by which 16and 26are obtained is presumed to involve the intermediate formation of the 16‐electron (η6‐benzene)RuPMes* phosphinidene complex. |
| Databáze: |
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