Decomposition of chemically activated ethyltrimethylgermane the arrhenius  A ‐factors for rupture of group IVA—methyl bonds | Zendy

Scott R. L. | Zendy; Richardson A. E. | Zendy; Simons J. W. | Zendy; Hase W. L. | Zendy

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Decomposition of chemically activated ethyltrimethylgermane the arrhenius A ‐factors for rupture of group IVA—methyl bonds

Author(s) -

Scott R. L.,

Richardson A. E.,

Simons J. W.,

Hase W. L.

Publication year - 1975

Publication title -

international journal of chemical kinetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 68

eISSN - 1097-4601

pISSN - 0538-8066

DOI - 10.1002/kin.550070406

Subject(s) - chemistry , diazomethane , arrhenius equation , decomposition , extrapolation , germanium , methyl group , photodissociation , reaction rate constant , methyl radical , activation energy , medicinal chemistry , silicon , computational chemistry , photochemistry , alkyl , radical , organic chemistry , kinetics , physics , mathematical analysis , mathematics , quantum mechanics

The decomposition rate of chemically activated ethyltrimethylgermane from the reaction 1 CH 2 + (CH 3 ) 4 Ge, where 1 CH 2 was produced from diazomethane photolysis at 3660 Å, is 8.6 × 10 5 sec −1 . This result combined with RRKM theory and critical energy estimates yields an Arrhenius A factor of log[ A (sec −1 )/methyl] = 14.7 ± 0.8 for methyl rupture from germanium. Log A values for methyl rupture from carbon, silicon, and germanium linearly correlate with the vibrational‐rotational entropies of the corresponding tetramethyls. Extrapolation predicts log[ A (sec −1 )/methyl] = 14.4 and 14.3 for methyl rupture from tin and lead, respectively.

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