Publication Date

6-1989

Abstract

A derivative of dicoumarol, C25H16O6, Mr, = 412·41, orthorhombic, P212121, a = 7·959(2), b = 12·865 (3), c = 18·606 (6) Å, V = 1905·3 (22) Å3, Z = 4, Dx = 1.44 g cm-3, λ(Mo ) = 0·71073 Å , μ = 0·965 cm-1, F(000) = 856, T = 293 K, final R = 0·042 for 2031 observations. The 4-hydroxycoumarins are intramolecularly hydrogen bonded between hydroxyls and carbonyls, O···O separations are 2·624 (3) and 2·718 (3)Å, a scheme which imparts a dis-symmetry to the otherwise achiral molecule and underlies packing in a polar space group.

Subjects

Conformation; Molecular structure

Publication Information

Copyright 1989 International Union of Crystallography. The original published version of this article may be found at http://dx.doi.org/10.1107/S0108270188013678.

DOI

10.1107/S0108270188013678

Document Type

Journal Article

Included in

Chemistry Commons

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