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One naphthalene-1,4-dicarboxylate dianion in the title compound, [Cu2(C12H6O4)2(C14H8N4)2]·4H2O, bridges two N-heterocycle-chelated Cu atoms whereas the other one bridges four N-heterocycle-chelated Cu atoms, linking them into a flat carboxylate-bridged layer. The two independent Cu atoms show square-pyramidal coordination. Water molecules occupy the space between adjacent layers; they are possibly disordered, and their H atoms were not located. [ABSTRACT FROM AUTHOR]

The title compound, (C3H5N2)2[NiNa2Mo6O18(OH)6]·2H2O, features inversion-generated hexa­molybdonickelate anions (Ni site symmetry ). The anions are linked by the octa­hedrally coordinated sodium cations into a three-dimensional network containing one-dimensional channels. The imidazolium cations are embedded in the channels and inter­act with the inorganic framework by way of N—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title compound, (CH6N3)2[Na2Ni(OH)6Mo6O18]·10H2O, features inversion-generated hexa­molybdonickelate anions (Ni site symmetry ). The anions are linked by octa­hedrally coordinated Na+ cations into extended sheets. The guanidinium cations and uncoordinated water mol­ecules link the sheets together via O—H⋯O and N—H⋯O hydrogen bonds to form a three-dimensional network. Two water mol­ecule O atoms have site symmetry 2. [ABSTRACT FROM AUTHOR]

In the title compound, {[Zn(C8H4O4)(C24H16N2)]·H2O} n, the Zn center is coordinated by three O atoms from three different benzene-1,3-dicarboxyl­ate dianions and two N atoms from the bidentate 4,7-diphenyl-1,10-phenanthroline ligand to display a distorted trigonal–bipyramidal geometry. The benzene-1,3-dicarboxyl­ate ligand acts as a μ3-bridge, resulting in a two-dimensional coordination polymer with rhombus-shaped channels. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd(C8H4O4)(C17H10N4O)] n, the CdII atom is six-coordinated by four O atoms from three different benzene-1,3-dicarboxyl­ate (C8H4O42−; 1,3-BDC) ligands and two N atoms from the bidentate 2-furan-2-yl-1 H-imidazo[4,5- f]-1,10-phenanthroline (C17H10N4O) ligand in a distorted octa­hedral geometry. The CdII atoms are bridged by the 1,3-BDC ligands to form a double-chain structure. Neighbouring double chains inter­act through π–π inter­actions, resulting in a two-dimensional network. [ABSTRACT FROM AUTHOR]

In the centrosymmetric title compound, [Zn2(C14H9N2O2)4], each ZnII centre is four-coordinated by two N atoms and two O atoms from three 2-(1 H-benzoimidazol-2-yl)benzoate ligands in a tetra­hedral environment. C—H⋯O and N—H⋯O hydrogen bonds stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Zn(C4H2O4)(C14H8N4)]n, the ZnII atom is five-coordinate and exhibits a distorted trigonal-bipyramidal coordination. The ZnII atoms are further bridged by fumarate ligands, forming a two-dimensional network parallel to the ab plane. [ABSTRACT FROM AUTHOR]

In the title complex, [Cu2(C8H4O4)2(C6H6N2O)4]·3H2O, the CuII atom exhibits distorted trigonal–bipyramidal geometry and is coordinated by two N atoms of two isonicotinamide (inta) ligands and three O atoms of three isophthalate (ipt) ligands. C—H⋯O and N—H⋯O hydrogen bonds, as well as π–π stacking inter­actions, are observed between. [ABSTRACT FROM AUTHOR]

In the title complex, [Cd2(C24H26N4O2)(ClO4)2(H2O)2][Cd2(C24H26N4O2)(H2O)2](ClO4)2, the two distinct macrocycles adopt essentially flat structures. They each encapsulate two Cd atoms. One Cd coordination polyhedron, completed by a water O atom and a perchlorate O atom, is distorted octa­hedral, while the other is best described as a CdN2O3 square-based pyramid, with water in the apical site. Both dinuclear complexes are centrosymmetric. [ABSTRACT FROM AUTHOR]

In the title compound, {[Pr(C12H15O6)(H2O)]·0.5H2O} n, the central praseodymium(III) cation is nine-coordinated by O atoms from six different chdc2− ligands (chdc2− is the 1,4-cyclo­hexane­dicarboxyl­ate dianion) and one terminal water mol­ecule. An inter­esting feature of the compound is the presence of two strands of cis-chdc2− ligands wrapped around each other, held together by praseodymium(III) cations to form a double-stranded chain. trans-Chdc2− ligands further bridge adjacent double-stranded chains to yield a three-dimensional framework. [ABSTRACT FROM AUTHOR]

In the title compound, [Ni(NCS)2(C10H14N4)2] n, the NiII ion (site symmetry ) is coordinated by six N atoms from four different 1,1′-butane-1,4-diyldiimidazole ligands and two SCN− anions, in a slightly distorted octa­hedral geometry. Adjacent NiII ions are linked by pairs of 1,1′-butane-1,4-diyldiimidazole mol­ecules, resulting in a one-dimensional polymeric structure with a double-strand chain. [ABSTRACT FROM AUTHOR]

In the title compound, [Co(C6H6N2O)2(H2O)4](C8H4O4)·2H2O, the CoII atom (site symmetry ) exhibits a slightly distorted trans-CoN2O4 octa­hedral coordination geometry arising from two N-bonded isonicotinamide mol­ecules and four O atoms of water mol­ecules. The uncoordinated centrosymmetric terephthalate anion and uncoordinated water mol­ecules inter­act with the cation by way of O—H⋯O and N—H⋯O hydrogen bonds, generating a three-dimensional network. [ABSTRACT FROM AUTHOR]

In the mol­ecule of the title compound, C18H20N4, the cyclo­hexane ring has a chair conformation. The dihedral angle between the two planar pyridine rings is 68.19 (3)°. [ABSTRACT FROM AUTHOR]

The title inorganic–organic hybrid, {(C7H18N5)2[Mo8O27]·6H2O} n, features polyoxomolybdate chains with neighboring [Mo8O27]6− subunits, each lying on an inversion center, sharing an O atom. These polyanionic chains together with the organic cations and the water mol­ecules are linked together by hydrogen bonds to form a three-dimensional network. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd(C8H4O4)(C7H6N2)2] n, the Cd atom is coordinated by four O atoms from two different benzene-1,4-dicarboxyl­ate (bdc) ligands and two N atoms from two different benzimidazole ligands. The bdc ligands bridge the Cd atoms to form a one-dimensional zigzag chain structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Eu(C8H6NO2)3(H2O)]n, the europium(III) ion is coordinated by eight carboxylate O atoms and one water molecule. The carboxylate ligands bridge pairs of europium(III) ions, forming a zigzag chain along [100]; hydrogen bonds link the chains into sheets parallel to (001). [ABSTRACT FROM AUTHOR]

In the title compound, {[Cu(C14H8O5)(C14H8N4)]·H2O} n, the CuII atom adopts a distorted cis-CuN2O2 square-planar coordination geometry. 4,4′-Oxydibenzoate ( L) ligands link the CuII atoms, generating a helical chain. Neighbouring chains are linked through π–π interactions between pyrazino[2,3- f][1,10]phenanthroline ligands with a centroid–centroid distance of ca 3.44 Å, resulting in a two-dimensional supramolecular structure. The structure is completed by O—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd(C12H10O4)(H2O)2], each CdII atom lies on a crystallographic twofold rotation axis and is six-coordinated by four carboxylate O atoms from two different 3,3′-( p-phenylene)diacrylate ligands, and two cis water molecules in a very distorted octahedral CdO6 environment. Each 3,3′-( p-phenylene)diacrylate dianion is centrosymmetric and acts as a bis-chelating ligand that binds two CdII atoms, thus forming a zigzag chain. The chain is decorated with water molecules and O—H...O hydrogen bonds link the chains together, forming a three-dimensional supramolecular structure. [ABSTRACT FROM AUTHOR]

In the title molecule, C17H14O4, all non-H atoms are essentially coplanar. The crystal structure is stabilized by weak intermolecular C—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The Co atom in the title compound, [Co(C6H5N2O4)2(H2O)2], is located on an inversion centre and exhibits a distorted octahedral geometry. It is trans coordinated by two N, O-bidentate 5-carboxy-2-methyl-1 H-imidazole-4-carboxylate monoanionic ligands with two water molecules in the axial positions. Each ligand is stabilized by a strong, almost symmetrical, hydrogen bond. Intermolecular N—H...O hydrogen bonds link the molecules into layers, which are further linked into a three-dimensional supramolecular framework through O—H...O hydrogen-bonding interactions involving the water molecules. [ABSTRACT FROM AUTHOR]

In the title compound, [Zn2(C8H4O4)(C7H5N2)2] n, the Zn atom is four-coordinated by two O atoms from two benzene-1,3-dicarboxylate (1,3-BDC) ligands and two N atoms from two anionic benzimidazolate (bzim) ligands, resulting in a ZnN2O2 tetrahedron. The complete 1,3-BDC ligand is generated by crystallographic twofold rotation symmetry, with two C atoms lying on the rotation axis. Together, the 1,3-BDC and bzim ligands bridge the Zn atoms, forming an infinite three-dimensional structure containing one-dimensional channels. [ABSTRACT FROM AUTHOR]

In the sugar mol­ecule of the title compound, C104H94O11·CH4O·0.75C4H8O, the pyran­ose ring adopts the expected chair conformation. Weak intra- and inter­molecular C—H⋯O hydrogen bonds, in part, control the mol­ecular conformation and stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

In the title compound, C12H14ClN5O4, the dihedral angles between the purine plane and two methoxy­carbonyl planes are 15.806 (19) and 68.818 (18)°. Inter­molecular N—H⋯O and N—H⋯N hydrogen bonds link mol­ecules into bands along the b axis; they are further aggregated via C—H⋯O inter­actions into layers parallel to the ab plane. [ABSTRACT FROM AUTHOR]

In the title compound, bis­(μ-pyridine-2,5-dicarboxyl­ato)bis­[aqua­(pyrazino[2,3- f][1,10]phenanthroline)manganese(II)] dihydrate, [Mn2(C7H3NO4)2(C14H8N4)2(H2O)2]·2H2O, each MnII atom is six-coordinated by three N atoms from one bidentate pyrazino[2,3- f][1,10]phenanthroline and one monodentate pyridine-2,5-dicarboxyl­ate ligand, and three O atoms from two monodentate pyridine-2,5-dicarboxyl­ate ligands and one water mol­ecule. The two MnII atoms are bridged by two pyridine-2,5-dicarboxyl­ate ligands, forming a centrosymmetric dinuclear molecule. Neighboring mol­ecules inter­act through π–π contacts, leading to a one-dimensional supra­molecular structure, and O—H⋯O hydrogen bonds complete the structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Cu(C4H2O4)(C14H8N4)] or [Cu(fum)(Pyphen)], where fum is the fumarate dianion and Pyphen is pyrazino[2,3- f][1,10]phenanthroline, the CuII atom is five-coordinate in a distorted trigonal–bipyramidal geometry. The chelated CuII atoms are further bridged by the fum ligands to form a two-dimensional structure with (4,4)-grids. [ABSTRACT FROM AUTHOR]

The structure of the title compound, [Cu2Cl2(C10H8N2)] n, consists of a two-dimensional layer. Each Cl atom bridges three Cu atoms to form a ladder-like structure, whereas the 4,4′-bipyridine ligands form a link between Cu atoms of adjacent ladders, thus building a two-dimensional layer structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Cu2Cl2(C8H4O4)(C18H10N4)2], the CuII atom is four-coordinated by two N atoms from one bidentate dipyrido[3,2- a:2′,3′- c]phenazine ligand, one Cl− anion and one O atom from the benzene-1,4-dicarboxyl­ate ligand. The complete benzene-1,4-dicarboxyl­ate ligand is generated by inversion symmetry, leading to a dinuclear complex. Neighbouring mol­ecules inter­act through π–π stacking, resulting in a two-dimensional supra­molecular structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Cu(C19H11N4)2(H2O)]·2H2O or [Cu( L)2(H2O)]·2H2O, where H L is 2-phenyl-1 H-1,3,7,8,-tetra­azacyclo­penta­[ l]phenanthrene, the CuII atom is five-coord­inated by four N atoms from two L− ligands and one O atom from one water mol­ecule. A three-dimensional supra­molecular structure is formed through π–π and hydrogen-bonding inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, poly[[(2-phenyl-1 H-1,3,7,8,-tetra­azacyclo­penta­[ l]phenanthrene)manganese(II)]-μ-benzene-1,3-dicarboxyl­ato], [Mn(C8H4O4)(C19H12N4)] n, the MnII atom is hexa­coordinated by two N atoms from the phenanthrene ligand, and four O atoms from three different benzene-1,3-dicarboxyl­ate ( m-BDC) ligands. The MnII atoms are bridged by the m-BDC ligands, forming a double-chain structure. Moreover, neighbouring double chains are in contact through π–π inter­actions, generating a two-dimensional supra­molecular structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd( m-BDC)( L)], where m-BDC is the benzene-1,3-dicarboxyl­ate dianion (C8H4O42−) and L is 2-phenyl-1 H-1,3,7,8,-tetra­azacyclo­penta­[ l]phenanthrene (C19H12N4), the CdII atom is six-coordinated by one bidenatate L, one bidentate m-BDC and two monodentate m-BDC ligands, resulting in a very distorted cis-CdN2O4 octa­hedral coordination geometry. The CdII atoms are bridged by the m-BDC ligands to form an unusual double-chain structure. In addition, neighboring double chains inter­act through π–π inter­actions, resulting in a two-dimensional network. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd2(C8H4O4)2(C19H12N4O)2] n, each Cd atom is six-coordinated by two N atoms from the substituted phenanthroline ligand and four O atoms from three different benzene-1,3-dicarboxyl­ate ( m-BDC) ligands. Pairs of Cd atoms with two carboxylate bridges form a dimeric unit with twofold rotation symmetry, and these dimeric units are further bridged by m-BDC ligands to form a double-chain structure. Furthermore, neighbouring double-chain polymers are inter­digitated, leading to a two-dimensional supra­molecular structure. [ABSTRACT FROM AUTHOR]

The title compound, C34H22BrN, was synthesized by N-alkyl­ation of 7-bromo-3-(4-bromo­phen­yl)-1-phenyl­naph­thalene with 9 H-carbazole. The carbazole ring system is essentially planar and makes a dihedral angle of 48.63 (9)° with the plane of the adjacent benzene ring. [ABSTRACT FROM AUTHOR]

In the title compound, [Cu2Br2(C16H11BrN2)2] n, each Cu atom displays a distorted tetra­hedral coordination formed by three Br atoms and one N atom from 5-(4-bromo­phen­yl)-2-(4-pyridin­yl)pyridine. Each Br atom bridges three Cu atoms, forming a stair-like structure along the b axis. [ABSTRACT FROM AUTHOR]

The title complex, [HgBr2 L] [ L is 1,4-bis­(ethyl­sulfanyl)butane, C4H9S], has a dinuclear structure in which one L ligand links two HgBr2 units. A C2 symmetry axis passes through the centre of the ligand L. The HgII centre adopts a slightly distorted trigonal planar geometry coordinated by two Br− anions and one S atom from L. When two weak Hg—Br interactions are considered, the dinuclear structure expands into a two-dimensional layer containing [HgBr2] n chains, with the HgII ion having a trigonal–bipyramidal geometry and the Br− anion acting as a μ2 linkage. [ABSTRACT FROM AUTHOR]

The title complex, [Hg2Br4(C18H22S2)] n, has a chain structure. Two bridging Br atoms and two terminal Br atoms coordinate to two HgII atoms to form a (HgBr2)2 dimer, and the 1,4-bis­(benzyl­sulfan­yl)butane ligands bridge the (HgBr2)2 dimers to form a one-dimensional chain. The dimer and butane ligand are each located on inversion centers. HgII adopts a tetra­hedral geometry formed by three Br and one S atoms. [ABSTRACT FROM AUTHOR]

The title complex, [Cu2(C16H10NO2)4(H2O)2], has a centrosymmetric wheel-shaped dinuclear structure in which two symmetry-related CuII centers are bridged by four carboxyl­ate groups of distinct 2-phenylquinoline-4-carboxyl­ate (phqc) ligands, the Cu—Cu separation being 2.6507 (12) Å. Each CuII center is five-coordinated by four O atoms of carboxyl­ate groups in the basal plane and one O atom of a water mol­ecule in the apical position. In addition, the dinuclear mol­ecules are linked by inter­molecular O—H⋯N hydrogen bonds to form a one-dimensional supramolecular chain. [ABSTRACT FROM AUTHOR]

The title complex, [Co(C10H6NO2)2(CH4O)2], is a neutral mononuclear complex containing a CoII ion in a six-coordinate environment. The CoII center, located on a crystallographic center of symmetry, displays a slightly distorted octa­hedral geometry, with two quinoline-8-carboxyl­ate and two methanol ligands in trans configurations. The complex mol­ecules are linked together by O—H⋯O and C—H⋯O hydrogen bonds between methanol mol­ecules and carboxyl­ate groups to form a three-dimensional framework. [ABSTRACT FROM AUTHOR]

In the original report by Li, Liu, Gao & Che [ Acta Cryst. (2005), E 61, m1705–m1707], the hydrogen-bond D⋯ A parameters were published without their associated s.u. values. The correct Table is given below. [ABSTRACT FROM AUTHOR]

In the structure of the title complex, [Cu(N3)2(C14H15N3O2)]·H2O, the Cu atom exhibits a CuN5O coordination environment formed by five N atoms, three from the N, N-bis­(2-pyridymeth­yl)glycine (bpg) ligand and two from azide anions, and one O atom belonging to bpg. The Cu—N distances range from 1.931 (3) to 1.960 (3) Å, with an average of 1.945 (3) Å, and the Cu—O distance is 1.900 (2) Å. The azide ligands are almost linear, with both N—N—N angles being 174.7 (4)°. [ABSTRACT FROM AUTHOR]

In the title compound, [Zn(1,4-BDC)(L)]n, where 1,4-BDC is the benzene-1,4-dicarboxylate dianion, C7H3O4N2-, and L is dipyrido[3,2-a:2',3'-c]-phenazine, C18H10N4, each ZnII atom is five-coordinated by two N atoms (from one dipyrido[3,2-a:2',3'-c]phenazine ligand) and three O atoms (from two monodentate benzene-1,4-dicarboxylate ligands and one water molecule). The ZnII atoms are bridged by benzene-1,4-dicarboxylate ligands, forming a one-dimensional chain structure. Neighboring one-dimensional chains interact through π-π contacts, leading to a two-dimensional supramolecular structure, and O—H…O hydrogen bonds complete the structure. [ABSTRACT FROM AUTHOR]

The title compound, C28H22O2, is a inter­mediate in the synthesis of 10,10′-dibromo-9,9′-bianthracen­yl. The mol­ecule forms both intra- and inter­molecular O—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The article focuses on the crystallization of the compound dimethyl (Z,Z)-3,3'-(propane-1,2-diyldiimino)dibut-2-enoate. The compound formed is a novel intermediate in the synthesis of related heterocycles. The molecular structure of the compound has a conformation involving a twist of two moieties. In the experiment methyl acetoacetate and water were mixed. 1,2-propanediamine was added to the mixture. Recrystallization was done from ethyl acetate.

In the title compound, {[Cd(C7H3NO4)(C10H8N2)]·H2O} n, each CdII atom is octahedrally coordinated by one N, N-bidentate 2,2′-bipyridine (bpy) molecule and three pyridine-2,4-dicarboxylate (pydc2−) dianions (one N, O-bidentate and two O-monodentate). The pydc species serve as bridges in a layered polymeric network. The crystal structure features π–π stacking interactions between the bpy molecules [closest atomic separation = 3.721 (4) Å] and probable O—H...O hydrogen bonds between the solvent water molecule and the uncoordinated carboxylate O atoms of the pydc2− dianions. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, C14H13N3O3·H2O, consists of one 4-hydr­oxy-3-methoxy­benzaldehyde nicotinoylhydrazone (NAHZ) mol­ecule and one water mol­ecule linked through hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, [Co(C10H7NO2)2(H2O)2], the CoII ion lies on an inversion centre. It has a distorted octa­hedral geometry and is coordinated by two N, O-bidentate 5-phenyl-1 H-pyrazole-3-carboxyl­ate ligands and two water mol­ecules. Inter­molecular O—H⋯O and N—H⋯O hydrogen bonds link mol­ecules into layers parallel to the (010) plane. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd(C8H4O4)(C3H4N2)2(H2O)] n, the Cd center is six-coordinated by three O atoms from two benzene-1,3-dicarboxyl­ate dianions, two N atoms from two imidazole ligands and one water mol­ecule in a distorted octa­hedral geometry. The benzene-1,3-dicarboxyl­ate dianion acts as a bridge, resulting in a one-dimensional chain-like structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Cd(C6H7N2O5)2], the Cd atom lies on an inversion center and has a slightly distorted octa­hedral geometry. The equatorial plane contains two bidentate 5-carb­oxy-2-methyl-1 H-imidazole-4-carboxyl­ate monoanionic ligands. Two coordinated water mol­ecules occupy the axial sites. Inter­molecular N—H⋯O hydrogen bonds link the mol­ecules into chains, which are further connected by inter­molecular O—H⋯O hydrogen bonds, resulting in a three-dimensional supra­molecular framework. [ABSTRACT FROM AUTHOR]

The title compound, C18H14ClN, is an inter­mediate in the preparation of a hole-transporting material. The molecule is constructed from three benzene ring systems through C—N bonds. [ABSTRACT FROM AUTHOR]

In the title compound, [CuCl(C14H8N4)] n, the central CuI ion displays a distorted tetra­hedral geometry, coordinated by two Cl− ions and two N atoms from a bidentate pyrazino[2,3- f][1,10]phenanthroline (PyPhen) ligand. Each Cl− ion bridges two CuI atoms, forming a zigzag chain structure. Cu and Cl have site symmetry 2; the complete PyPhen molecule is generated by twofold symmetry. [ABSTRACT FROM AUTHOR]

In the title compound, [Mn(C8H4O4)(C19H12N4O)2] n or [Mn(1,4-BDC)( L)2] n, where 1,4-BDC is the benzene-1,4-dicarboxyl­ate dianion and L is 4-(1 H-1,3,7,8-tetra­azacyclo­penta­[ l]phenanthren-2-yl)phenol, the MnII atom is six-coordinated by two bidentate L and two monodentate 1,4-BDC ligands, resulting in a distorted trans-MnO2N4 octa­hedral geometry. The MnII atoms are bridged by the 1,4-BDC ligands, forming a single-chain polymer structure. In addition, neighboring single chains inter­act through π–π inter­actions, generating a two-dimensional network. Mn has site symmetry ; the complete 1,4-BDC unit is also built up by inversion symmetry. [ABSTRACT FROM AUTHOR]