Abstract
The crystal structure of a double salt of sodium and cesium with 2-diphenylacetyl-1,3-indandione of the composition [Cs2Na(H2O)2(C23H16O3)(C23H15O3)3] (I) was studied by X-ray crystallography. The crystals of I are monoclinic, Z = 2, space group P21/n, a = 10.212(2) A, b = 23.479(5) A, c = 15.638(3) A, β = 98.30(03)°. The compound contains [Cs2NaO10] trimers, in which the central Na atom shares two edges with two Cs atoms through deprotonated bridging ligands. The trimers are connected to adjacent trimers by paired C-H...O contacts to form layers. The layers form an infinite open framework via hydrogen bonds between the oxygen atoms of keto groups of noncoordinated indandione moieties and water molecules that enter the cesium coordination sphere in trimers of the adjacent layers.
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