Ruthenium(II) complexes with 2,6-pyridyl-diimine ligands: synthesis, characterization and catalytic activity in epoxidation reactions


Cetinkaya B., Cetinkaya E., Brookhart M., White P.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, cilt.142, ss.101-112, 1999 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 142 Konu: 2
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1016/s1381-1169(98)00285-4
  • Dergi Adı: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
  • Sayfa Sayıları: ss.101-112

Özet

Reaction of [RuCl2(p-cymene)](2) with the tridentate N-N'-N ligands, 2,6-pyridyl-diimines, led to substitution of p-cymene. The resulting complexes, believed to be coordinatively unsaturated, exhibit efficient activity for the epoxidation of cyclohexene in the presence of iodosobenzene (PhIO): the complexes formed initially take up donor molecules such as acetonitrile to achieve hexacoordination. The molecular structure for one of these, (acetonitrile){2,6-bis[1-(4-methoxyphenylimino)ethyl]pyridine}dichlororuthenium(II), 2, has been determined by X-ray diffraction. The immediate coordination sphere is a distorted octahedron with trans chloride atoms and a short Ru-N(py) (1.906 Angstrom) bond. (C) 1999 Elsevier Science B.V. All rights reserved.