D. Bennemann et al., X-RAY AND MISCIBILITY INVESTIGATIONS ON NEW COMPOUNDS EXHIBITING WIDE-RANGE SMECTIC-Q PHASES, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 260, 1995, pp. 351
Four new series of liquid crystals are presented. Six of the new chira
l compounds which are members of three different series exhibit wide r
ange SmQ phases while their respective racemates and shorter homologue
s show SmCA, SmC and SmA phases. X-ray investigations on the SmQ phase
of two compounds confirm its three-dimensional tetragonal lattice and
show that the lattice parameter c can be both smaller or larger than
the parameters a = b.