Tetrakis(trimethylsilyl)ethylene and related compounds,crowded olefins |
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Authors: | Hideki Sakurai Yasuhiro Nakadaira Mitsuo Kira Hiromi Tobita |
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Institution: | Department of Chemistry, Faculty of Science, Tohoku University, Sendai 980, Japan |
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Abstract: | Tetrakis(trimethylsilyl)ethylene (1), tris(trimethylsilyl) (dimethylsilyl)ethylene and 1,2-bis(trimethylsilyl)-1,2-bis(dimethylsilyl)ethylene have been prepared and spectral properties are described. ESR spectra of anion and cation radicals of 1 are also recorded, indicating a nonplanar twisted structure for 1. These crowded olefins show interesting reversible thermochromism. |
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