SYNTHESIS AND SPECTROSCOPIC STUDIES OF PENTACARBONYLFUMARONITRILE-CHROMIUM(0), PENTACARBONYLFUMARONITRILE-MOLYBDENUM(0), AND PENTACARBONYLFUMARONITRILE-TUNGSTEN(0)


MOUR I., OZKAR S. , KREITER C.

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, cilt.49, ss.1059-1062, 1994 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 49 Konu: 8
  • Basım Tarihi: 1994
  • Dergi Adı: ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
  • Sayfa Sayıları: ss.1059-1062

Özet

Photolysis of hexacarbonyl-chromium(0), -molybdenum(0), and -tungsten(0) in presence of fumaronitrile yields at room temperature pentacarbonyl-fumaronitrile-chromium(0) (1): molybdenum(0) (2), and -tungsten(0) (3). The complexes were purified by crystallization and characterized by IR and C-13-NMR spectroscopy. The fumaronitrile ligand is bonded to the M(CO)(5) moiety by one nitrile nitrogen atom rather than by the carbon-carbon double bond. In toluene 2 dissociates into fumaronitrile and pentacarbonyl-molybdenum(0), which is stabilized by the solvent. Fumaronitrile and solvated pentacarbonyl-molybdenum(0) exist in solution together with 2 in an equilibrium which lies in favour of the former species.