Citation

Russell DK, Davidson IMT, Ellis AM, Mills GP, Pennington M, Povey IM, Raynor JB, Saydam S. Chemical Vapor Deposition 1998; 4(3): 103-107.

Copyright

(Copyright © 1998)

DOI

10.1002/(sici)1521-3862(199805)04:03<103::aid-cvde103>3.3.co;2-8

PMID

unavailable

Abstract

The gas-phase pyrolysis of methyl pentacarbonyl manganese and acetyl pentacarbonyl manganese, both alone and in the presence of trimethyl silane, has been investigated using stirred flow reactor kinetic measurements and IR laser powered pyrolysis, together with electron spin resonance (ESR) detection of radical intermediates. For methyl pentacarbonyl manganese alone, all observations support a mechanism initiated by methyl-manganese bond homolysis, whereas the initial step in the acetyl compound involves CO loss and methyl migration. The addition of trimethylsilane sensitizes decomposition of MeMn(CO)5, yielding methane and trimethylsilyl pentacarbonyl manganese; on the other hand, Me3SiH has little effect on the rate of decomposition of MeCOMn(CO)5. A mechanism based on methyl migration is proposed to account for these observations.

Language: en

Keywords

Electron spin resonance spectroscopy; Free radical reactions; Gas chromatography; Kinetics; Manganese; Manganese compounds; Manganese silicide; Mass spectrometry; Mechanism; Metallorganic chemical vapor deposition; Pyrolysis; Reaction kinetics; Suicide