Liquid crystal compound and liquid crystal composition employing the same

A liquid crystal compound represented by Formula (I)

• wherein
• R1 represents hydrogen, a C1-C10 alkyl group, or a C2-C10 alkenyl group, where the C1-C10 alkyl group or the C2-C10 alkenyl group is unsubstituted or at least one —CH2— of the C1-C10 alkyl group or the C2-C10 alkenyl group is replaced by —O—, —S—, —O—CO—, —OC—O—, or —O—CO—O—, provided that the —O—, —S—, —O—CO—, —OC—O—, and —O—CO—O— do not directly bond to one another, and/or at least one hydrogen of the C1-C10 alkyl group or the C2-C10 alkenyl group is substituted by halogen, CN, or CF3;
• each of A1, A2, A3, and A4 independently represents a 1,4-phenylene group, a 1,4-cyclohexylene group, a divalent dioxabicyclo[2.2.2]octylene group, a divalent trioxabicyclo[2.2.2]octylene group, or a divalent 2,5-indanylene group, where the 1,4-phenylene group, the 1,4-cyclohexylene group, or the divalent 2,5-indanylene group is unsubstituted or at least one hydrogen of the 1,4-phenylene group, the 1,4-cyclohexylene group, or the divalent 2,5-indanylene group is substituted by halogen, CN, or CF3, and/or at least one —CH2— of the 1,4-cyclohexylene group is replaced by —O—, —S—, —O—CO—, —OC—O—, or —O—CO—O—, provided that the —O—, —S—, —O—CO—, —OC—O—, and —O—CO—O— do not directly bond to one another, and/or at least one —CH2— of the divalent 2,5-indanylene group is replaced by —O— or —S—, provided that the —O— and —S— do not directly bond to one another;
• each of Z1, Z2, Z3, and Z4 independently represents a single bond, a C1-C4 alkylene group, a C2-C4 alkenylene group, a C2-C4 alkynylene group, —O—CO—, or —CO—O—, where the C1-C4 alkylene group, the C2-C4 alkenylene group, or the C2-C4 alkynylene group is unsubstituted or at least one hydrogen of the C1-C4 alkylene group, the C2-C4 alkenylene group, or the C2-C4 alkynylene group is substituted by halogen, and/or at least one —CH2— of the C1-C4 alkylene group, the C2-C4 alkenylene group, or the C2-C4 alkynylene group is replaced by —O— or —S—, provided that the —O— and —S— do not directly bond to each other;
• X represents hydrogen, halogen, CN, CF3, or CCl3;
• and
• each of m, n, o, and p independently represents 0 or 1, and m+n+o+p>0.