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2-(p-Chlorophenyl)-3-nitro-2H-chromene

Rao, Bh Lakshmi and Seshadri, TP and Rao, LM (1987) 2-(p-Chlorophenyl)-3-nitro-2H-chromene. In: Acta Crystallographica Section C, 43 (3). pp. 495-497.

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Abstract

C15H10C1NO3, Mr=287.70, triclinic, PI, Z= 2, F(000)= 296, a = 5.422 (1), b = 9.624 (1), c= 12.636 (2) A, ~= 76.66 (2), fl= 78.67 (2), ~= 87.97 (2) ° , V=629.03 A 3, Din= 1.507 (3), Ox= 1.519Mgm -3, 2(CuKa)=l.5418A, p=26.25mm -~, T= 413 K, final R = 0.0577 for 1859 observed reflections [I>2.5e(/)]. Bond lengths [1.512(5)A] and angles [109.2 (3) °] at the phenyl substitution site are comparable with those in other molecules. The bond angle at the nitro substitution site C(7)-C(8)-C(9) is 122.9 (3) ° owing to the electron-withdrawing character of the nitro group. The pyran ring adapts a half-chair conformation.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to International Union of Crystallography.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 28 Jul 2009 07:18
Last Modified: 07 Oct 2010 07:35
URI: http://eprints.iisc.ernet.in/id/eprint/21784

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