Synthesis and Spectroscopic Studies of Pentacarbonylfumaronitrile-chromium(0),-molybdenum(0), and -tungsten(0)
Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences, vol.49, no.8, pp.1059-1062, 1994 (Scopus)
- Publication Type: Article / Article
- Volume: 49 Issue: 8
- Publication Date: 1994
- Doi Number: 10.1515/znb-1994-0808
- Journal Name: Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
- Journal Indexes: Scopus
- Page Numbers: pp.1059-1062
- Keywords: Carbonyl, Chromium, Fumaronitrile Complexes, Molybdenum, Tungsten
- Open Archive Collection: AVESIS Open Access Collection
- Middle East Technical University Affiliated: Yes
Abstract
Photolysis of hexacarbonyl-chromium(0), -molybdenum(0), and -tungsten(0) in presence of fumaronitrile yields at room tem perature pentacarbonyl-fumaronitrile-chromium(0)(1), -molybdenum(0) (2), and -tungsten(O) (3). The complexes were purified by crystallization and characterized by IR and 13C-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. © 1994, Walter de Gruyter. All rights reserved.