Publication Date

12-1979

Abstract

C19H22O4, monoclinic, P21/c, a = 2·515 (2), b = 17·472 (3), c = 7·489 (1) Å, β = 00·40 (1)°. The structure was solved by direct methods. The cyclohexyl group is pseudo-equatorial and trans to the axial hydroxyl; the dihydropyran ring is a half-chair distorted towards the d,e-diplanar conformation. Hydrogen bonding between the coumarin carbonyl and the hydroxyl groups at an O···O distance of 2·834 (4) Å is found. In CDC13 solution, this compound exists predominantly in the open-chain keto form.

Subjects

Conformation; Molecular structure

Publication Information

Copyright 1979 International Union of Crystallography. The original published version of this article may be found at http://dx.doi.org/10.1107/S0567740879011535.

DOI

10.1107/S0567740879011535

Document Type

Journal Article

Included in

Chemistry Commons

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