| Autor: |
Chao, M.-H., Kumaresan, S., Wen, Y.-S., Lin, S.-C., Hwu, J. R., Lu, K.-L. |
| Zdroj: |
Organometallics; February 2000, Vol. 19 Issue: 4 p714-717, 4p |
| Abstrakt: |
Reaction of the hydroxyamine 7-chloro-4-(hydroxyamino)quinoline with the triosmium cluster Os3(CO)10(NCMe)2 gave the complex (μ-H)Os3(CO)10(μ2-η1-O-C9H6N2Cl) (3), in which a new mode of μ2-η1-O-oximato ligand bridged two osmium centers by an oxygen atom. This complex was slowly converted to (μ-H)Os3(CO)10(μ2-η2-ON-C9H6NCl) (4), where an aromatic C−H moiety in the μ2-η2-ON-oximatoquinoline group formed an unusual short intramolecular C−H···O−N hydrogen bond and an intermolecular C−H···O&dbd;C hydrogen bond simultaneously. The formation of the intramolecular hydrogen bond may provide a stabilization effect for the generation of the η2-ON complex 4 and a driving force for the transformation of 3 to 4. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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