Synthesis, spectral characterization and catalytic studies of new ruthenium(II) chalcone thiosemicarbazone complexes
A series of new hexa-coordinated ruthenium(II) complexes of the type [Ru(CO)(EPh 3 )(B)(L)] (E = P or As; B = PPh 3 , AsPh 3 or Py; L = chalcone thiosemicarbazone) have been prepared by reacting [RuHCl(CO)(EPh 3 ) 2 (B)] (E = P or As; B = PPh 3 , AsPh 3 or Py) with chalcone thiosemicarbazones in ben...
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Veröffentlicht in: | Central European Journal of Chemistry 2010-02, Vol.8 (1), p.229-240 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A series of new hexa-coordinated ruthenium(II) complexes of the type [Ru(CO)(EPh
3
)(B)(L)] (E = P or As; B = PPh
3
, AsPh
3
or Py; L = chalcone thiosemicarbazone) have been prepared by reacting [RuHCl(CO)(EPh
3
)
2
(B)] (E = P or As; B = PPh
3
, AsPh
3
or Py) with chalcone thiosemicarbazones in benzene under reflux. The new complexes have been characterized by analytical and spectroscopic (IR, UV-vis,
1
H,
31
P and
13
C 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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ISSN: | 1895-1066 2391-5420 1644-3624 2391-5420 |
DOI: | 10.2478/s11532-009-0116-x |