A new structural type of liquid crystal Crystal structures and thermotropic mesophases of dihydroxytetraalkyldisiloxanes: Columnar phases with hydrogen bonded assemblies |
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| Authors: | A P Polishchuk T V Timofeeva N N Makarova M Yu Antipin Yu T Struchkov |
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| Institution: | 1. Institute of Physics, Ukrainian S.S.R. Academy of Sciences , 252650, Kiev, 28, pr. Nauki, 46, U.S.S.R.;2. Institute of Organoelement Compounds, U.S.S.R. Academy of Sciences , 117813, Moscow, Vavilov str., 28, U.S.S.R. |
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| Abstract: | Abstract Previous structural investigations of mesogenic organosilicon compounds (1, 3-dihydroxytetraalkyldisiloxanes, R2(OH)Si]2O, R = C n H2n+1) which form thermotropic phases are outlined. The crystal and molecular structure determination of a non-mesogenic member of this series Me2(OH)Si]2O is described. It is inferred that the mesophases formed by this family of compounds belong to a new structural type with columnar stacks of the molecules laced together with hydrogen bonds. |
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