The compound 1, wherein n is the integer 0, X1 is a single convalent bond, ring {TAIL ~ A1} is trans 1,4 cyclohexylene, ring A2 is 1,4 phenylene, R1 is 4 pentenyl and R2 is ethyl, CN or {HEAD ~ NCS} 
The compound 1 , wherein n is the integer 0 , X1 is a single convalent bond , ring { TAIL ~ A1 } is trans 1,4 cyclohexylene , ring A2 is 1,4 phenylene , R1 is 4 pentenyl and R2 is ethyl , CN or { HEAD ~ NCS }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD