| Autor: |
Buntem, Radchada, Gallagher, John F., Lewis, Jack, Raithby, Paul R., Rennie, Moira-Ann, Shields, Gregory P. |
| Zdroj: |
Journal of the Chemical Society, Dalton Transactions; December 7, 2000, Vol. 2000 Issue: 23 p4297-4303, 7p |
| Abstrakt: |
Deprotonation of [Os3H2(CO)10(PPh3)], with DBU (1,8-diazabicyclo[5.4.0]undec-7-ene), and subsequent treatment with the ionic coupling reagent [Ru(η5-C5H5)(MeCN)3][PF6] afforded the tetrahedral cluster [Os3H(CO)10(PPh3){Ru(η5-C5H5)}]. Reduction of the trinuclear osmium cluster [Os3(CO)11(PPh3)] with K/Ph2CO and subsequent coupling with [Ru(η5-C5H5)(MeCN)3][PF6] yielded the pentanuclear clusters [Os3(CO)11(PPh3){Ru(η5-C5H5)}2], [Os3H2(CO)11(PPh3){Ru(η5-C5H5)}2] and the butterfly cluster [Os3H(CO)11(PPh3){Ru(η5-C5H5)}]. In an analogous reaction using [Os3(CO)11{P(OMe)3}] only one complex [Os3(CO)11{P(OMe)3}{Ru(η5-C5H5)}2] was isolated. This undergoes an orthometallation when heated under reflux in toluene to yield the novel spiked tetrahedral cluster [Os3Ru2H(CO)11{P(OMe)3}(η5-C5H5)(μ3-η5-C5H4)]. All the new complexes have been characterised spectroscopically and the molecular and crystal structures of three have been determined by single-crystal X-ray diffraction. The structure of [Os3Ru2H(CO)11{P(OMe)3}(η5-C5H5)(μ3-η5-C5H4)] shows an uncommon μ3-η5-bonding mode for the deprotonated cyclopentadiene ring. |
| Databáze: |
Supplemental Index |
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