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- W2002369170 abstract "Tetramethyl germane was decomposed using laser sensitized photochemistry. Sulfur hexafluoride, a sensitizer, was added to gas phase tetramethyl germane and irradiated using a carbon dioxide, infrared, continnous wave laser under variable experimental conditions. The gas phase reactions were monitored before and after reaction using both Fourier transform infrared spectroscopy and gas chromatographic/mass spectral techniques. End product analysis showed that methane, ethene, and ethyne were the primary gaseous products. Germanium was identified visually as a gray solid. This laser sensitized dissociation of tetramethyl germane was optimized by a variation in irradiations and conditions such as sample pressure including sensitizer to reactant pressure ratio, laser power, and time. The yield of germane at the 1 s irradiation was 33% while at the 5 s irradiation, at 57% was observed. Both the rate of depletion of tetramethyl germane and the rate of formation of methane, ethene, and ethyne were determined at numerous irradiation times. Longer irradiation times and higher sulfur hexafluoride pressures produced higher yields. Experimental data from the time studies were used to generate simulated concentrations of reactants, reactive intermediates, and products as a function of time to a high degree of accuracy. The rate constants for the laser sensitized dissociation of tetramethyl germane using sulfur hexafluoride as a sensitizer were determined. Simulation analysis suggests that this reaction can be fit statistically to an eight-step reaction mechanism. These results are discussed and compared to similar literature studies of tetramethyl germane dissociations." @default.
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- W2002369170 date "1996-09-01" @default.
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- W2002369170 title "Laser sensitized dissociation of tetramethyl germane" @default.
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- W2002369170 doi "https://doi.org/10.1016/1010-6030(96)04352-3" @default.
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