Powder Diffraction Data and Mesomorphic Properties for 4-Butyloxyphenyl 4'-Decyloxybenzoate

TL;DR

This study reports detailed powder diffraction data and analyzes mesomorphic phases of a liquid crystal compound, confirming the presence of smectic A and C phases and refuting the existence of other phases.

Contribution

It provides new unit cell parameters and phase analysis for 4-butyloxyphenyl 4'-decyloxybenzoate, clarifying its mesomorphic behavior.

Findings

Confirmed smectic A and C phases via temperature-dependent X-ray diffraction.

Refuted the existence of previously reported smectic B phase.

Identified a more ordered, tilted crystalline smectic phase.

Abstract

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.