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