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Crystal structure of mesogenic material IV-nematogenic 4-(4′-ethoxyphenylazo)phenyl heptanoate

Shaikh, AM and Shivaprakash, NC and Abdoh, MMM and Prasad, J Shashidhara (1984) Crystal structure of mesogenic material IV-nematogenic 4-(4′-ethoxyphenylazo)phenyl heptanoate. In: Zeitschrift für Kristallographie, 169 (1-4). pp. 109-115. ISSN 0044-2968

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Official URL: http://dx.doi.org/10.1524/zkri.1984.169.1-4.109


The crystals of 4-(4′-ethoxyphenylazo)phenyl heptanoate (C21H26N2O3) are triclinc, space group P[unk] with a = 7.935(3), b = 8.568(4), c = 16.216(4) Å, α = 73.61(3), β = 75.01(3), γ = 71.26(4)° and two molecules per unit cell. The structure was solved by direct method (MULTAN80) using 1922 observed reflections. The refinement by block-diagonal least-squares and Fourier methods gave R = 0.0457. The molecule is almost linear and planar. The angle between two phenyl rings is 15.02°. The pairs of molecules related by a centre of symmetry form an imbricated arrangement. The crystalline cohesion is a result of a large number of feeble dispersion forces and dipole-dipole interaction.

Item Type: Journal Article
Publication: Zeitschrift für Kristallographie
Additional Information: Copy right for this article belongs to the R OLDENBOURG VERLAG, ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 04 Jan 2017 05:13
Last Modified: 09 Feb 2017 07:23
URI: http://eprints.iisc.ac.in/id/eprint/55738

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