期刊
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
卷 8, 期 1, 页码 229-240出版社
DE GRUYTER OPEN LTD
DOI: 10.2478/s11532-009-0116-x
关键词
Spectroscopic characterization; Catalytic oxidation; Catalytic transfer hydrogenation; Chalcone thiosemicarbazone complexes
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi [01(2065)/06/EMR-II]
A series of new hexa-coordinated ruthenium(II) complexes of the type [Ru(CO)(EPh3)(B)(L)] (E = P or As; B = PPh3, AsPh3 or Py; L = chalcone thiosemicarbazone) have been prepared by reacting [RuHCl(CO)(EPh3)(2) (B)] (E = P or As; B = PPh3, AsPh3 or Py) with chalcone thiosemicarbazones in benzene under reflux. The new complexes have been characterized by analytical and spectroscopic (IR, UV-vis, H-1, P-31 and C-13 NMR) methods. On the basis of data obtained, an octahedral structure was assigned for all of the complexes. The chalcone thiosemicarbazones behave as dianionic tridentate O, N, S donors and coordinate to ruthenium via the phenolic oxygen of chalcone, the imine nitrogen of thiosemicarbazone and thienol sulfur. The new complexes exhibit catalytic activity for the oxidation of primary and secondary alcohols to their corresponding aldehydes and ketones and they were also found to be efficient catalysts for the transfer hydrogenation of carbonyl compounds.
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