Transformation of a Tetrasila-1,3-dienide to Its Valence Isomers
A tetrasila-1,3-dien-1-ide (<b>2</b>, a tetrasila-1,3-dien-1-yl anion) generated by desilylation of the corresponding 1,4-bis(trimethylsilyl)tetrasila-1,3-diene (<b>1</b>) with potassium <i>tert</i>-butoxide undergoes transformation to provide a mixture of its val...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , |
| منشور في: |
2025
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| الموضوعات: | |
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| الملخص: | A tetrasila-1,3-dien-1-ide (<b>2</b>, a tetrasila-1,3-dien-1-yl anion) generated by desilylation of the corresponding 1,4-bis(trimethylsilyl)tetrasila-1,3-diene (<b>1</b>) with potassium <i>tert</i>-butoxide undergoes transformation to provide a mixture of its valence isomers, a bicyclo[1.1.0]tetrasilan-2-ide (<b>4</b>) and a cyclotetrasilen-3-ide (<b>5</b>) at room temperature. The structures of the obtained valence isomers were characterized by NMR spectroscopy and single-crystal X-ray diffraction analysis. Equilibrium between <b>4</b> and <b>5</b> is observed in solution. The isomerization routes between the valence isomers are also found by DFT calculations of model compounds. |
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