Acta Cryst. (2002). E58, m197-m199 [ doi:10.1107/S1600536802005809 ]
Abstract: The crystal structure of the title compound, R-(Na+·C19H15O4-)·S-(Na+·C19H15O4-)·C3H8O, the 2-propanol solvate of the sodium salt of 4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one, i.e. bis(sodium 2-oxo-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-4-olate) 2-propanol solvate, is composed of infinite sheets in the ab plane, separated only by van der Waals contacts. The hydroxycoumarin fragments display rotational rigid-body motion. The 2-propanol molecule is rotationally disordered and was modeled as two components. Each of the two sodium ions is associated with four O atoms that form a distorted tetrahedron bridging the two warfarin anions.
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