Crystal structure as the basis for the lack of enantiotropic mesomorphism in 3-hydroxy-4-propionylphenyl-4′-n-alkyloxybenzoates


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Abstract

Features of the molecular structure and crystal packing of the mesogenic compounds 3-hydroxy-4-propionylphenyl esters of 4-n-amyloxy (1), 4-n-hexyloxy (2), 4-n-heptyloxy (3), and 4-n-octyloxybenzoic acid (4) have been analyzed on the basis of X-ray diffraction (XRD) data. Comparison of the results of XRD and DSC studies of these compounds has shown that the crystalline modification studied for each of the compounds is not a precursor to the mesophase. The possibility of mesophase formation from the melt is discussed.

About the authors

L. G. Kuz’mina

Kurnakov Institute of General and Inorganic Chemistry

Author for correspondence.
Email: kuzmina@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991

I. I. Konstantinov

Topchiev Institute of Petrochemical Synthesis

Email: kuzmina@igic.ras.ru
Russian Federation, Leninskii pr. 29, Moscow, 119991

S. I. Bezzubov

Kurnakov Institute of General and Inorganic Chemistry

Email: kuzmina@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991

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