74656-37-4Relevant academic research and scientific papers
Temperature dependence of germylene reactions with acetylene, trimethylsilane, and phenylgermane
Alexander, Ula N.,King, Keith D.,Lawrance, Warren D.
, p. 529 - 534 (2000)
Gas-phase reaction rate constants have been determined over the temperature range 295-436 K for the reactions of germylene, GeH2, with acetylene (GeH2 addition across a triple bond), trimethylsilane (GeH2 insertion into a Si-H bond), and phenylgermane. The room-temperature rate constant for germylene reacting with benzene has been measured and is found to be a factor of ~300 smaller than that for phenylgermane, indicating that the latter reacts by GeH2 insertion into the Ge-H bonds. A negative temperature dependence is observed in all cases. The activation energies, obtained from weighted linear fits to the data over the experimental temperature range, are -3.5±0.3, -11.0±0.4, and -3.6±0.3 kJ mol-1 for acetylene, trimethylsilane, and phenylgermane, respectively, while the respective frequency factors, log(A/cm3 molecule-1 s-1), are -10.5±0.1, -11.8±0.1, -10.1±0.1.
