NDLI: Supramolecular Architecture of Two Modifications of Flavone-6,2′-dicarboxylic acid

Content Provider	Springer Nature Link
Author	Wen, Hui Liang Feng, Xue Liu, Chong Bo Chen, Yun Hua Hu, Xiao Bo
Copyright Year	2011
Abstract	Two crystalline forms of flavone-6,2′-dicarboxylic acid (fla): one N,N-dimethylformamide (DMF) solvate (modification 1) and one without any solvate molecules (modification 2), have been obtained and their structures were determined by X-ray diffraction technique. Modification 1 crystallized in the orthorhombic space group Pbca; and modification 2 crystallized in the monoclinic space group P2(1)/c. In 1 and 2 fla molecules are both joined to helix chain structures via O–H···O hydrogen-bonds between carboxylic group of B ring and carbonyl oxygen atom of C ring, however, in 1 helix chains are further joined by DMF molecules; and in 2 helix chains are further linked via rich hydrogen-bonds between fla molecules, which result in different packing of modifications 1 and 2.Flavone-6,2′-dicarboxylic acid (fla) was found to exhibit two different conformations. One crystallizes from N,N-dimethylformamide in orthorhombic group Pbca and the other crystallizes from n-propanol in monoclinic group P2(1)/c without any solvent molecules.
Starting Page	1472
Ending Page	1475
Page Count	4
File Format	PDF
ISSN	10741542
Journal	Journal of Chemical Crystallography
Volume Number	41
Issue Number	10
e-ISSN	15728854
Language	English
Publisher	Springer US
Publisher Date	2011-05-20
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Flavone-6,2′-dicarboxylic acid Modification Hydrogen-bonding Helix chain Crystallography Physical Chemistry Inorganic Chemistry Organometallic Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Condensed Matter Physics

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