Powder Diffraction Data and Mesomorphic Properties for 4-Butyloxyphenyl   4'-Decyloxybenzoate
  Unit cell parameters obtained from X-ray powder diffraction data are presented for the crystalline phase of a liquid crystal 4-butyloxyphenyl 4'-decyloxybenzoate: a = 23.098 (4) {\AA}, b = 5.974 (6) {\AA}, c = 12.357 (10) {\AA}, \b{eta} = 121.53 (8){\deg}, unit-cell volume V = 1453.56 {\AA}3. Temperature dependent X-ray diffraction data confirmed the existence of smectic A and smectic C mesophases and a more ordered, tilted crystalline smectic phase. Possibility of existence of previously reported smectic B phase as well as another crystalline phase was refuted. 
M. Cvetinov, M. Stojanovi\'c, D. Obadovi\'c, S. Raki\'c, A. Vajda, K.   Fodor-Csorba, N. \'Eber
cond-mat.mtrl-sci