ETHYL 6,7-BIS(TRIFLUOROMETHYL)ISOCOUMARIN-3-CARBOXYLATE - FORMED BY ANOVEL DIELS-ALDER CYCLOADDITION INVOLVING 2 DIFFERENT ALPHA,BETA-UNSATURATED ESTERS

Authors
ABUBAKAR AB PRITCHARD RG SULIMAN NNE TIPPING AE
Citation
Ab. Abubakar et al., ETHYL 6,7-BIS(TRIFLUOROMETHYL)ISOCOUMARIN-3-CARBOXYLATE - FORMED BY ANOVEL DIELS-ALDER CYCLOADDITION INVOLVING 2 DIFFERENT ALPHA,BETA-UNSATURATED ESTERS, Acta crystallographica. Section C, Crystal structure communications, 51, 1995, pp. 2100-2102
Citations number
9
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
51
Year of publication
1995
Part
10
Pages
2100 - 2102
Database
ISI
SICI code
0108-2701(1995)51:<2100:E6-FBA>2.0.ZU;2-F
Abstract
In common with other isocoumarin-based molecules, the planar fused rin g system [maximum deviation 0.05(2)Angstrom] in the title molecule, et hyl is(trifluoromethyl)-1H-2-benzopyran-3-carboxylate, C14H8F6O4, cont ains a non-delocalized double bond [C = C 1.34 (2) Angstrom]. Pairs of molecules form pi-bonded dimers, centred on inversion points at y = 1 /4 and 3/4 [closest interplanar C ... C approach 3.59 (3)Angstrom]. Co nsequently, the crystal structure is composed of alternating aromatic (y = 1/4 or 3/4) and aliphatic zones (y = 0 or 1/2).