Investigation of Substituent Effects of 2-Substituted Silaethylenes

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This investigation is concerned with determining whether a carbon substituent or a silicon substituent on the carbon terminus of a silicon-carbon double bond has a more stabilizing effect. Two different 2-substituted silaethylenes were generated at the same time by pyrolyzing 1, 1-dimethyl-2-neopentyl-4- (dimethylalkoxysilyl) silacyclobutanes in a nitrogen flow system. The results of these pyrolyses, both neat and in the presence of a trapping reagent, show that the silaethylene with a silicon substituent on the carbon terminus was favored approximately two to one over the silaethylene with a carbon substituent. This datum, along with other observations and hypotheses discussed, leads to ... continued below

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iv, 51 leaves: ill.

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Snyder, Walter David December 1980.

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  • Snyder, Walter David

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This investigation is concerned with determining whether a carbon substituent or a silicon substituent on the carbon terminus of a silicon-carbon double bond has a more stabilizing effect. Two different 2-substituted silaethylenes were generated at the same time by pyrolyzing 1, 1-dimethyl-2-neopentyl-4- (dimethylalkoxysilyl) silacyclobutanes in a nitrogen flow system. The results of these pyrolyses, both neat and in the presence of a trapping reagent, show that the silaethylene with a silicon substituent on the carbon terminus was favored approximately two to one over the silaethylene with a carbon substituent. This datum, along with other observations and hypotheses discussed, leads to the suggestion that the silicon substituenton the carbon terminus of the silaethylene bond has a more stabilizing effect than the carbon substituent.

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iv, 51 leaves: ill.

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  • December 1980

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  • May 10, 2015, 6:16 a.m.

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  • Jan. 31, 2017, 10:50 a.m.

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Snyder, Walter David. Investigation of Substituent Effects of 2-Substituted Silaethylenes, thesis, December 1980; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc504095/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .