The Crystal and Molecular Structure of Mesomorphic 1,4-Dipentadecanoyloxy-biphenyl (SYM-14)

The compound with the general formula C_nH_2n+1 –COO–C₆H₄–C₆H₄–OOC–C_nH_2n+1, n = 14 (SYM- 14) crystallizes in the triclinic space group P 1 , with a = 5.431(5), b = 9.346(8), c = 39.172(51) Å, α = 92.60(15), β = 90.65(15), γ = 100.364(8)°. The crystal structure was solved by direct methods. Least-squares refinement leads to a final R value of 0.092 for 1575 observed reflections, with I > 2σs(I). The packing arrangement follows the same building principles found recently for the first three members of the well known homologous series of liquid crystalline terephthalylidine-anilines (TBAA-n).