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Crystal structure of the charge-transfer complex promethazine picrate

Shastry, Venkatramana CI and Seshadri, TP and Prasad, Shashidhara J and Achar, Narayana B (1987) Crystal structure of the charge-transfer complex promethazine picrate. In: Zeitschrift für Kristallographie, 178 (1-4). pp. 283-288.

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Official URL: http://www.oldenbourg-link.com/doi/abs/10.1524/zkr...


Promethazine picrate (C23H23N5O7S) crystallises in the triclinic space group P[unk] with a = 8.137(1), b = 8.144(3), c = 19.224(6) Å, α = 87.78(3), β = 79.97(2), γ = 70.57(2)° and two molecules per unit cell. The structure was solved by direct methods (MULTAN 80) using 2438 observed reflections [I > 2.5 σ(I)]. Refinement was carried out by block-diagonal least-squares methods to a final R = 0.052. The picrate group is planar and is almost perpendicular to the promethazine plane. The two groups are joined by a hydrogen bond. The pairs of molecules related by a centre of symmetry make a molecular arrangement where promethazine and picrate groups are packed in sheets in three dimensions.

Item Type: Journal Article
Publication: Zeitschrift für Kristallographie
Publisher: Oldenbourg Wissenschaftsverlag
Additional Information: Copyright of this article belongs to Oldenbourg Wissenschaftsverlag.
Keywords: Experimental study;Organic compounds;Adduct;Charge transfer; Crystalline structure;Molecular structure;X ray diffraction; Hydrogen bond;Benzenic compound;Tricyclic compound;Sulfur nitrogen heterocycle;Phenol.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 22 Oct 2010 08:11
Last Modified: 23 Feb 2012 06:36
URI: http://eprints.iisc.ac.in/id/eprint/33389

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