Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph

Dimethyl 2,2′-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph

The title molecule, C21H18O8, crystallizes in two crystal polymorphs, see also Nallasivam, Nethaji, Vembu & Jaswant [Acta Cryst. (2009), E65, o314–o315]. The molecules of both polymorphs differ by the conformation of the oxomethylacetate groups. The title molecules are rather plana...

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Bibliographic Details
Main Authors:	Nagarajan Sulochana, Buckle Jaswant, Nagarajan Vembu, Munirathinam Nethaji, Angannan Nallasivam
Format:	Article
Language:	English
Published:	International Union of Crystallography 2009-02-01
Series:	Acta Crystallographica Section E
Online Access:	http://scripts.iucr.org/cgi-bin/paper?S1600536809001020

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