journal menu
inorganic compounds
The anionic component of the langbeinite-type title compound, ammonium oxonium dititanium(III,IV) tris(phosphate), is an infinite three-dimensional [Ti2(PO4)3]2− network based on PO4 tetrahedra corner-linked to TiO6 octahedra; the charge-balancing ammonium and oxonium cations occupy the cavities in the network and interact by way of N—H
O and O—HO hydrogen bonds. The two independent Ti atoms, the ammonium N atom and the oxonium O atom lie on special positions of site symmetry 3.
O and O—HO hydrogen bonds. The two independent Ti atoms, the ammonium N atom and the oxonium O atom lie on special positions of site symmetry 3.metal-organic compounds
The reaction of ferric sulfate with ethylenediamine in the presence of acid under hydrothermal conditions results in the title compound, (C2H10N2)2[FeIII(OH)(SO4)2](SO4)·H2O. The six-coordinate ferrate dianion participates in a μ2-hydroxo-di-μ2-sulfate-bridged chain. The component species interact with each other by an extensive network of O—HO and N—HO hydrogen bonds. The two independent FeIII atoms lie on sites of 
symmetry.
O and N—HO hydrogen bonds. The two independent FeIII atoms lie on sites of 
symmetry.metal-organic compounds
The Ni atom in the title compound, [Ni(C20H38N4O4)]·4H2O, is chelated by four N atoms of the macrocycle and also covalently bonded to two carboxylate groups, in a cis-N4O2Ni octahedral environment. The mononuclear complex interacts with the solvent water molecules to form a three-dimensional network structure.
metal-organic compounds
The Co atom in the title compound, [Co(C20H38N4O4)]·4H2O, is chelated by the four N atoms of the macrocycle and also covalently bonded to two carboxylate O atoms in a cis-N4O2Co octahedral environment. The mononuclear molecule interacts with the non-coordinated water molecules by way of O—HO interactions to form a three-dimensional network.
O interactions to form a three-dimensional network.metal-organic compounds
The polymeric title molecule, {[Ni2(C8H7O2)4(C10H8N2)3(H2O)2]·2H2O}n, lies on a center of symmetry at the mid-point of the Cpyridine—Cpyridine bond of one of the two 4,4′-bipyridine molecules that link the adjacent aquanickel(II)–dicarboxylate units into a linear chain. The other 4,4′-bipyridine molecule connects adjacent chains into a square (C10H8N2)3Ni2 grid. The ladder-like layer structure is disordered in all the organic groups bonded to the metal atom; the uncoordinated water molecules interact within the layers through hydrogen bonds.
metal-organic compounds
The zirconium(IV) ion in the title compound, (C5H6N)4[Zr(SO4)4]·H2O, exists in a distorted dodecahedral geometry with four bidentate sulfate groups. The tetraanion, two of the pyridinium cations and water molecule all lie on special positions with m site symmetry. A network of N—HO and O—HO hydrogen bonds helps to stabilize the structure.
O and O—HO hydrogen bonds helps to stabilize the structure.metal-organic compounds
In the crystal structure of the title compound, (C10H10N2)[Fe(H2O)6](SO4)2·2H2O, hydrogen bonds link the 4,4'-bipyridinium cation, which lies on a special position of site symmetry 2, the hexaaquairon(II) cation, which lies on a center of symmetry, the sulfate anions and the uncoordinated water molecules into a three-dimensional network structure.
metal-organic compounds
In the crystal structure of the polymeric title compound, {(C4H12N2)[Fe(OH)(SO4)2]·2H2O}n, the anion exists as a linear chain whose two independent FeIII atoms both occupy special positions of 
site symmetry. The two independent cations, which also lie on inversion sites, interact with the polyanionic chain and with the uncoordinated water molecules to form a tight-held three-dimensional network.
site symmetry. The two independent cations, which also lie on inversion sites, interact with the polyanionic chain and with the uncoordinated water molecules to form a tight-held three-dimensional network.metal-organic compounds
In the crystal structure of the title compound, [Zn2(C8H4O4)2(C2H6OS)2]·5C2H6OS, four independent carboxylate units of the 1,4-benzenedicarboxylate groups chelate to two Zn atoms to give rise to —O—C—O—ZnZn— rings, the four O atoms around each zinc atom forming a square, above which is a dimethyl sulfoxide (DMSO) molecule and below which is the other Zn atom. The bridging mode of the 1,4-benzenedicarboxylate groups, one of which lies on a general position and the other two on inversion centers, leads to a layer structure having DMSO molecules between the layers. The uncoordinated solvent molecules account for about 80% of the volume of the unit cell.
Zn— rings, the four O atoms around each zinc atom forming a square, above which is a dimethyl sulfoxide (DMSO) molecule and below which is the other Zn atom. The bridging mode of the 1,4-benzenedicarboxylate groups, one of which lies on a general position and the other two on inversion centers, leads to a layer structure having DMSO molecules between the layers. The uncoordinated solvent molecules account for about 80% of the volume of the unit cell.organic compounds
The crystal structure of the centrosymmetric title compound, C24H48N4O84+·4Cl-·8H2O, consists of a 14-membered methyl-substituted C10N4 cationic ring which interacts with the chloride ions and water molecules of crystallization to give a three-dimensional hydrogen-bonded network structure.
organic compounds
Molecules of 5-chlorosalicylaldehyde benzoylhydrazone, C14H11ClN2O2, are linked by an intermolecular amino-carbonyl hydrogen bond into a linear chain that runs along the a axis of the orthorhombic unit cell.
organic compounds
Molecules of 5-bromo-1H-indole-3-carbaldehyde 3-methoxybenzoylylhydrazone, C17H14BrN3O2, are paired by amino-carbonyl hydrogen bonds over a center of inversion, and adjacent pairs are further linked by hydrogen bonds into ribbons.
