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metal-organic compounds
The carboxylate dianion in the polymeric title compound, [Zn(C9H6O5)(H2O)2]n, which is disordered over a centre of inversion, links diaquazinc(II) units into a zigzag chain; the chains interact through hydrogen bonds to form layers. The six-coordinate metal atom lies on a special position of site symmetry 2.
organic compounds
Excluding H atoms, the title molecule, C12H15O3N3, is approximately planar. Glide-related molecules are linked by intermolecular O—H
O hydrogen bonds into a chain structure running along [101]. The crystal packing is further stabilized by π–π interactions.
O hydrogen bonds into a chain structure running along [101]. The crystal packing is further stabilized by π–π interactions.metal-organic compounds
The SrII atom in the title compound, {[Sr(C14H9O3)(H2O)2]·H2O}n, is chelated by the carboxyl and hydroxyl O atoms of two anions, and is coordinated by two water molecules that function in a bridging mode. The eight-coordinate configuration arises from additional interaction with the carboxyl O atoms which are already involved in chelation in adjacent molecules. The geometry is intermediate between dodecahedral and square antiprismatic in the linear chain structure.
metal-organic compounds
The dicarboxylate dianion in the polymeric title compound, [Cd(C10H8O3S)(H2O)2]n, links diaquacadmium(II) units into a zigzag chain. Adjacent chains are linked by hydrogen bonds into a layered structure. The coordination geometry of the Cd atom is octahedral, with Cd—OCOO distances of 2.395 (3) and 2.359 (3) Å, and a Cd—Oaqua distance of 2.193 (4) Å. The Cd atom lies on a twofold rotation axis.
