ISOPROPYL HYDROGEN -DIHYDRO-9,10-ETHENOANTHRACENE-11,12-DICARBOXYLATE

Authors
POKKULURI PR SCHEFFER JR TROTTER J
Citation
Pr. Pokkuluri et al., ISOPROPYL HYDROGEN -DIHYDRO-9,10-ETHENOANTHRACENE-11,12-DICARBOXYLATE, Acta crystallographica. Section C, Crystal structure communications, 50, 1994, pp. 922-924
Citations number
2
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
50
Year of publication
1994
Part
6
Pages
922 - 924
Database
ISI
SICI code
0108-2701(1994)50:<922:IH->2.0.ZU;2-1
Abstract
The title compound, C21H18O4, exists in the crystal as hydrogen-bonded dimers, O-H...O = 2.669 (3) angstrom. The molecule has normal dimensi ons. The C=O bond of the CO2H group is conjugated with the C11=C12 dou ble bond [C=C-C=O torsion angle -164.4 (3)-degrees, cos 2(angle) 0.931 . but the C=O bond of the CO2C3H7 group is not conjugated [C=C-C=O 65. 6 (3)-degrees, cos2 (angle) 0.17].