Liquid crystalline carbonic acid ester and liquid crystal composition containing same.

摘要

A ferroelectric liquid crystal compound having superior properties and a chiral smectic liquid crystal composition are provided, which ferroelectric liquid crystal is expressed by the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="16" wi="82" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R represents an alkyl group of 2-18C; A, -COO- or -OCO-; ℓ and m each, 1 or 2 but f + m = 2 or 3; n, an integer of 2-8; and symbol <Sup>*</Sup>, an asymmetric carbon atom.