A Urea with Nonplanar Nitrogen-Bonding Geometry

Regan, A.C. and Wallis, J.D. (1992) A Urea with Nonplanar Nitrogen-Bonding Geometry. Acta Crystallographica Section C-Crystal Structure Communications, 48 . pp. 1801-1804. ISSN 0108-2701. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1107/S0108270192001641

Abstract

(4R,5S)-1,5-Dimethyl-4-phenylimidazolidin-2-one, C11H14N2O, M(r) = 190.2, orthorhombic, P2(1)2(1)2(1), a = 6.161 (2), b = 8.045 (3), c = 20.811 (6) angstrom, V = 1031.5 angstrom3, Z = 4, D(x) = 1.23 g cm-3, Mo Kalpha radiation, lambda = 0.71069 angstrom, mu = 0.75 cm-1, F(000) = 408, T = 293 K, R = 0.041 for 839 observed reflections. The N-methyl atom of this urea derivative, a chiral auxiliary in asymmetric synthesis, is partially pyramidalized [sum of angles at N = 349 (1)-degrees] to minimize steric repulsions between adjacent ring substituents.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: M. Nasiriavanaki
Date Deposited: 21 Aug 2009 10:04
Last Modified: 21 Aug 2009 10:04
Resource URI: http://kar.kent.ac.uk/id/eprint/22411 (The current URI for this page, for reference purposes)
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