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metal-organic compounds
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In the title coordination polymer, [Cd2(C4H4O4)(NO3)2(C12H8N2)2(H2O)2]n, the CdII ion is seven-coordinated within a distorted pentagonal–bipyramidal O5N2 environment. The succinate anions, located on an inversion centre, adopt a bis-monodentate bridging mode, leading to the formation of rods along [100]. The rods are connected by O—H
O hydrogen bonds between the coordinating water molecules and nitrate O atoms of adjacent rods; the same type of hydrogen bonds are also observed between water and carboxylate O atoms within the rods. π–π stacking interactions with a minimum plane-to-plane separation of 3.462 (2) Å occur between phenanthroline ligands.
O hydrogen bonds between the coordinating water molecules and nitrate O atoms of adjacent rods; the same type of hydrogen bonds are also observed between water and carboxylate O atoms within the rods. π–π stacking interactions with a minimum plane-to-plane separation of 3.462 (2) Å occur between phenanthroline ligands.organic compoundsOpen access
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The title compound [systematic name: 5,6,7-trimethoxy-2-(7-methoxy-1,3-dihydro-2-benzofuran-5-yl)-4H-chromen-4-one monohydrate], C20H18O8·H2O, was isolated from the popular Chinese medicinal plant Entada phaseoloides. In the crystal, inversion-related molecules are joined by pairs of weak C—HO hydrogen bonds. The dimers are further interconnected by a bridging water molecule via weak C—HOwater and pairs of (O—H)waterO hydrogen bonds into a linear tape running parallel to the b axis.
O hydrogen bonds. The dimers are further interconnected by a bridging water molecule via weak C—HOwater and pairs of (O—H)waterO hydrogen bonds into a linear tape running parallel to the b axis.
