Poly[bis­(μ-hemihydrogen 2-phenyl­quinoline-4-carboxyl­ato-κ2 N,O)silver(I)]. Corrigendum

Corrigendum to Acta Cryst. (2009), E65, m223

Bis{tris­[3-(2-pyrid­yl)-1H-pyrazole]nickel(II)} dodeca­molybdosilicate tetra­hydrate

The asymmetric unit of the title compound, [Ni(C8H7N3)3]2[SiMo12O40]·4H2O, consists of a complex [Ni(C8H7N3)3]2+ cation, half of a Keggin-type heteropolyanion [SiMo12O40]4− and two uncoordinated water mol­ecules. The Ni2+ cation is surrounded in a slightly distorted octa­hedral coordination by six N atoms from three chelating 3-(2-pyrid­yl)-1H-pyrazole ligands. In the heteropolyanion, two O atoms of the central SiO4 group ( symmetry) are equally disordered about an inversion centre. N—H⋯O and O—H⋯O hydrogen bonding between the cations, anions and the uncoordinated water mol­ecules leads to a consolidation of the structure

Poly[bis­(μ-hemihydrogen 2-phenyl­quinoline-4-carboxyl­ato-κ2 N,O)silver(I)]

In the title compound, [Ag(C16H10.5NO2)2], the AgI cation (site symmetry 2) is coordinated by two N atoms in a near-linear AgN2 arrangement. Two carboxyl­ate O atoms from two additional 2-phenyl­quinoline-4-carboxyl­ate ligands form long Ag—O bonds [2.6585 (17) Å], resulting in a distorted square-planar arrangement. The bridging ligands result in infinite corrugated sheets propagating in (010). An O—H⋯O hydrogen bond, disordered about a twofold axis, completes the structure

Tris(2,2′-bipyridine)­nickel(II) hexa­molybdate

The asymmetric unit of the title compound, [Ni(C10H8N2)3][Mo6O19], consists of one complex [(Ni(C10H8N2)3]2+ cation and one Lindqvist-type [Mo6O19]2− polyanion. The Ni2+ ion is in a distorted octa­hedral coordination by six N atoms from three chelating 2,2′-bipyridine ligands. The Lindqvist-type anion exhibits the characteristic Mo—O bond-length distribution, with the shortest bonds being the Mo—O(terminal) bonds [mean = 1.679 (2) Å] and the longest being those to the central O atom [mean = 2.318 (7) Å]. A number of C—H⋯O inter­actions contribute to the crystal packing

Bis(μ-2,2′-biimidazole-κ2 N 3:N 3′)bis­[aqua­copper(I)] sulfate

In the structure of the title compound, [Cu2(C6H6N4)2(H2O)2]SO4, the asymmetric unit contains half each of two 2,2′-diimidazole ligands, one Cu+ cation, one water mol­ecule and half of a sulfate anion (2 symmetry). The dinuclear complex is completed through a twofold rotation axis, leading to a twisted ten-membered ring mol­ecule. The dihedral angle between the two symmetry-related 2,2′-diimidazole ligands is 23.6 (1)°. The copper centre is coordinated by two N atoms of two symmetry-related 2,2′-diimidazole ligands in an almost linear fashion. The water mol­ecule exhibits a weak coordination to Cu+ with a more remote distance of 2.591 (2) Å. The distance between the two copper centres is 2.5956 (6) Å. O—H⋯O and N—H⋯O hydrogen bonds between the complex cation, the water mol­ecule and the sulfate anion lead to the formation of a three-dimensional network

Tetra-μ-oxido-tetra­kis{dioxido[3-(2-pyrid­yl)-1H-pyrazole]molybdenum(VI)}

In the title compound, [Mo4O12(C8H7N3)4], the MoVI ion has a distorted octa­hedral coordination completed by two terminal O atoms, two μ-oxide atoms and two N atoms from one 3-(2-pyrid­yl)-1H-pyrazole ligand. It is noteworthy that in the tetranuclear unit ( symmetry), any three MoVI atoms define a plane, and the fourth lies 1.8 (1) Å out of that plane. The degree of linearity of the oxide bridges between two Mo atoms is 175.38 (13)°. Moreover, the N—H group forms an intra­molecular hydrogen bond (four per mol­ecule)

Diaqua-1κO,2κO-(2,2′-bi-1H-imidazole-1κ2 N 3,N 3′)(oxalato-2κ2 O 1,O 2)di-μ-oxido-κ4 O:O-dioxido-1κO,2κO-dimolyb­denum(V) trihydrate

In the title compound, [Mo2(C2O4)O4(C6H6N4)(H2O)2]·3H2O, the coordination polyhedra for both Mo(V) atoms consist of two bridging O atoms, two atoms of the chelating ligand (oxalate or diimidazole), a terminal O atom and one H2O mol­ecule. The two distorted octa­hedrally coordinated Mo(V) atoms are linked together via O—O edge-sharing and Mo—Mo inter­actions with a Mo—Mo bond length of 2.564 (5) Å. Uncoordinated water mol­ecules are situated in the voids of the crystal structure. N—H⋯O and O—H⋯O hydrogen bonding between the neutral mol­ecules and the water mol­ecules lead to a consolidation of the structure

(μ-Oxalato-κ4 O 1,O 2:O 1′,O 2′)bis­[bis­(2,2′-bipyridine-κ2 N,N′)cobalt(II)] μ6-oxido-dodeca-μ2-oxido-hexa­oxido-hexa­tungstate(VI)

The asymmetric unit of the title compound, [Co2(C2O4)(C10H8N2)4][W6O19], consists of one half of the complex [Co2(C2O4)(C10H8N2)4]2+ cation and one half of the Lindqvist-type [W6O19]2− isopolyanion. Both constituents are completed by crystallographic inversion symmetry. In the dimeric cation, the CoII atom is surrounded in a distorted octa­hedral coordination by four N atoms from two chelating 2,2′-bipyridine ligands and by two O atoms from the chelating oxalate anion. The Lindqvist-type anion exhibits the characteristic W—O bond-length distribution, with the shortest bonds being the W—Oterminal bonds and the longest being those to the central O atom

Diaqua-1κO,3κO-di-μ-cyanido-1:2κ2 N:C;2:3κ2 C:N-dicyanido-2κ2 C-bis­{4,4′-dibromo-2,2′-[propane-1,2-diylbis(nitrilo­methyl­idyne)]diphenolato}-1κ4 O,N,N′,O′;3κ4 O,N,N′,O′-1,3-di­iron(III)-2-nickel(II)

The title compound, [Fe2Ni(C17H14Br2N2O2)2(CN)4(H2O)2] or [{Fe(C17H14Br2N2O2)(H2O)}2(μ-CN)2{Ni(CN)2}], is iso­structural with its MnIII-containing analogue. Each FeIII atom is chelated by a Schiff base ligand via two N and two O atoms and is additionally coordinated by a water mol­ecule, forming a slightly distorted octa­hedral geometry. The two FeIII centres are bridged by a square-planar Ni(CN)4 unit, which lies on an inversion centre. A two-dimensional network is formed via O—H⋯O and O—H⋯N hydrogen bonds

Tris{aqua­bis[3-(2-pyrid­yl)-1H-pyrazole]copper(II)} di-μ9-arsenato-hexa­triaconta-μ2-oxido-octa­deca­oxidoocta­deca­molybdate(VI)

The title compound, [Cu(C8H7N3)2(H2O)]3[As2Mo18O62], consists of two subunits, viz. an α-Dawson-type [As2Mo18O62]6− anion and a complex [Cu(C8H7N3)2(H2O)]2+ cation. The copper(II) ion (site symmetry .2) is penta­coordinated in a distorted square-pyramidal manner by four N atoms from two chelating 3-(2-pyrid­yl)pyrazole ligands in equatorial positions and one water mol­ecule in the apical position. In the heteropolyanion, two O atoms of the AsO4 group (3. symmetry) are equally disordered about the threefold rotation axis. N—H⋯O and O—H⋯O hydrogen bonding between the neutral mol­ecules and the water mol­ecules leads to a consolidation of the structure