Bai-Wang Sun

1,10-Phenanthrolinium perchlorate

The proton-transfer title compound, C12H9N2+·ClO4−, has been obtained from 1,10-phenanthroline and HClO4. In the crystal structure, the molxadecules stack along the a axis via hydrogen-bond interxadactions and van der Waals forces.

Diaqua-bis(picolinato N-oxide-κO,O')zinc(II).

In the title compound, [Zn(C6H4NO3)2(H2O)2], the Zn atom is located on a centre of inversion and shows a distorted octahedral coordination geometry. Two aqua ligands occupy the axial positions and four O atoms of the two chelating picolinic acid N-oxide ligands are located in the equatorial plane. Intermolecular hydrogen bonds between aqua ligands and organic ligands link molecules into a two-dimensional arrangement.

catena-Poly[[silver(I)-μ-[N-(4-pyridyl­meth­yl)pyridine-4-carboxamide-κ2N:N′]] nitrate monohydrate]

The title coordination polymer, {[Ag(C12H11N3O)]NO3·H2O}n, has a polycationic chain motif in which the Ag atom is bridged by the heterocyclic ligand; the Ag atom shows linear coordination. If the two long Ag⋯Onitrate interactions [2.794u2005(6) and 2.867u2005(5)u2005Å] are regarded as bonds, the compound adopts a three-dimensional network structure. The water molecule consolidates the network structure by forming hydrogen bonds, one to the polycationic chain and one to the nitrate anion.

catena-Poly[[bis-(3-benzoyl-pyridine-κN)zinc(II)]-di-μ-dicyanamido-κN:N].

The title compound, [Zn(C2N3)2(C12H9NO)2]n, is a polymeric zinc(II) complex with the metal ion located on an inversion centre. The ZnII ion is six-coordinated by two N atoms of two 3-benzoylpyridine ligands and four N atoms from four dicyanamide ligands, forming a slightly distorted octahedral configuration. In the crystal structure, neighboring Zn atoms are linked together by double dicyanamide bridges to form a polymeric zinc(II) complex.

2,2′-[1-(2,4,6-Trichlorophenyl)-1H-1,2,4-triazole-3,5-diyl]diphenol

The title compound, C20H12Cl3N3O2, was synthesized by the reaction of 2-(2-hydroxyphenyl)benz[e][1,3]oxazin-4-one with 2,4,6-trichlorophenylhydrazine in ethanol. The trichlorophenyl ring is nearly perpendicular to the triazole plane [dihedral angle 80.56u2005(8)°], whereas the two hydroxyphenyl rings are approximately coplanar with the triazole ring [dihedral angles of 2.79u2005(12) and 8.00u2005(14)°]. Intramolecular O—H⋯N hydrogen bonding is observed between the hydroxyphenyl and triazole rings.

Bis[μ-3-(2-hydroxy­ethyl)-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-9-olato-κ3N,O:O]bis[aquachloridocopper(II)]

In the dinuclear centrosymmetric copper(II) title compound, [Cu2(C11H11N2O2)2Cl2(H2O)2], each CuII ion has a slightly distorted trigonal-bipyramidal geometry and is coordinated by one N and one O atom from one 3-(2-hydroxyethyl)-2-methyl-4-oxopyrido[1,2-a]pyrimidin-9-olate ligand, another O atom from the second ligand, one water molecule and one Cl atom. The crystal structure involves intermolecular C—H⋯Cl, O—H⋯Cl and O—H⋯O hydrogen bonds

Aqua-(1,10-phenanthroline-κN,N')bis-(trimethyl-acetato)-κO,O';κO-cobalt(II).

In the title compound, [Co(C5H9O2)2(C12H8N2)(H2O)], the CoII atom is coordinated in a distorted octahedral environment by three carboxyl O atoms of two trimethylacetate ligands, one aqua O atom and two N atoms from 1,10-phenanthroline. The crystal structure is stabilized by O—H⋯O hydrogen bonds and π–π stacking interactions [interplanar distance between interdigitating 1,10-phenanthroline ligands = 3.378u2005(2)u2005Å].

Poly[(μ6-benzene-1,2,4,5-tetra­carboxyl­ato)bis­(1,10-phenanthroline-κ2N,N′)dimanganese(II)]

The title polymeric compound, [Mn2(C10H2O8)(C12H8N2)2]n, was obtained by the reaction of manganese(II) chloride tetrahydrate with benzene-1,2,4,5-tetracarboxylic acid (H4bta) in aqueous solution. Each Mn2+ ion is coordinated in a distorted octahedral geometry by two N atoms from one 1,10-phenanthroline ligand and four O atoms [Mn—O = 2.116u2005(2)–2.237u2005(2)u2005Å] from three bta4− ligands, which also act as bridging groups between the Mn2+ ions.

Decacarbonyl-1κ3C,2κ3C,3κ4C-μ-hydrido-1:2κ2H:H-(μ-quinoline-2-thiol­ato-1:2κ2S:S)diosmium(I)osmium(0)(3 Os—Os)

The title compound, [Os(3)(C(9)H(6)NS)H(CO)(10)], contains a nearly equilateral triangle of Os atoms. Two of the Os atoms are bridged by an S atom of the quinoline-2-thiol-ate ligand. Ten carbonyl groups complete the cluster, resulting in a distorted octa-hedral geometry for each Os atom. The hydride atom, which was located in a difference Fourier map and refined isotropically, bridges the shortest Os-Os edge.

catena-Poly[[aqua­copper(II)]-μ-[(S)-N-(2-hydroxy­benz­yl)-l-aspartato]]

The title compound, [Cu(C11H11NO5)(H2O)]n, was obtained by the reaction of Cu(NO3)2 and the homochiral organic ligand (S)-N-(2-hydroxybenzyl)-l-aspartic acid (S-H3sasp). The CuII ion has a distorted square-pyramidal geometry and is coordinated by one N atom and three O atoms from the organic ligand and one O atom from a water molecule. The carboxyl O atoms of the ligands bridge the Cu atoms to form an infinite one-dimensional zigzag chain. Intermolecular hydrogen bonds link these chains into a two-dimensional arrangement.