| abstract |
(57) Abstract: An acetylene compound represented by the general formula (1), a liquid crystal composition containing the compound, and a liquid crystal element using the same. (Wherein, R 1 and R 2 represent an alkyl group, an alkenyl group, an alkoxyalkyl group, an alkenyloxyalkyl group, an aralkyl group, an aryloxyalkyl group, or a cycloalkylalkyl group, which are substituted with a halogen atom. Y 1 may be a —O— group or a —COO— A group, Y 2 is a single bond, a —O— group, a —COO— group or — (C represents a C≡C group, n represents an integer of 1 to 4, and X 1 represents a hydrogen atom or a halogen atom.) [Effect] A liquid crystal that maintains a bookshelf structure and suppresses a layer structure change after a low-temperature history. A composition is provided. |