%0 Journal Article
%T HYDROGEN-BONDED SUPRAMOLECULAR ARRAY IN THE CRYSTAL STRUCTURE OF ETHYL 7-HYDROXY-2-OXO-2H-CHROMENE-3-CARBOXYLATE MONOHYDRATE
%A GALD¨˘MEZ
%A ANTONIO
%A GARC¨ŞA-BELTR¨˘N
%A OLIMPO
%A CASSELS
%A BRUCE K
%J Journal of the Chilean Chemical Society
%D 2011
%I Scientific Electronic Library Online
%R 10.4067/S0717-97072011000100005
%X the crystal structure of ethyl 7-hydroxy-2-oxo-2h-chromene-3-carboxylate monohydrate (1), c12h10o5.h2o, was established by x-ray crystallographic analysis. the molecule of the title compound is essentially planar except for the carboxylate substituent group. the crystal packing supramolecular array arises from hydrogen bonds and intermolecular c-h - o=c contacts of the organic molecules and solvent water molecules, with graph-set descriptor r24 (8), r21 (6), r44 ( 20) and c (5) motifs. the water molecules are involved as donors and acceptors. the hydrogen bond and intermolecular interaction network is reinforced by stacking of the sheet through p-p interactions.
%K crystal structure
%K coumarins
%K x-ray diffraction.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0717-97072011000100005&lng=en&nrm=iso&tlng=en