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Bis(methanol-κO)bis-(quinoline-2-carboxyl-ato-κN,O)nickel(II).

ABSTRACT: In the title complex, [Ni(C(10)H(6)NO(2))(2)(CH(3)OH)(2)], the Ni(II) ion lies on an inversion center and is coordinated by two quinoline-2-carboxyl-ate ligands in the equatorial sites and two axial methanol ligands, forming a distorted octa-hedral environment. In the crystal, mol-ecules are linked via O-H⋯O hydrogen bonds into a two-dimensional network parallel to (10[Formula: see text]).

SUBMITTER: Kang J

PROVIDER: S-EPMC3246941 | biostudies-literature |

REPOSITORIES: biostudies-literature

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trans-Bis(methanol-κO)bis-(quinoline-2-carboxyl-ato-κN,O)manganese(II).

Project description:The title compound, [Mn(C(10)H(6)NO(2))(2)(CH(4)O)(2)], was obtained unintentionally as the product of an attempt to synthesize a polynuclear carboxyl-ate bridged manganese(III/IV) complex, using methanol to reduce the permanganate ion. The mol-ecule is centrosymmetric; the pairs of equivalent ligands coordinate trans to each other in a distorted octa-hedral geometry. Intra-molecular C-H⋯O bonds lying in the equatorial plane stabilize the mol-ecule. In the crystal, mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds, creating a three-dimensional supra-molecular structure. π-π and C-H⋯π inter-actions are also observed. The dihedral angle and centroid-to-centroid distance between the pyridine ring (A) and the benzene ring (B(i)) of a symmetrically related mol-ecule [symmetry code: (i) -1 - x, -y, -z] are 1.27 (11)° and 3.974 (2) Å, respectively. For the C-H⋯π inter-actions, the relevant distances and angles are: C⋯Cg[A(ii)] = 3.643 (2) Å, H⋯Cg[A(ii)] = 2.750 (2) Å and C-H⋯Cg[A(ii)] = 155 (1)° [symmetry code: (ii) x, -1 + y, z].

| S-EPMC2959585 | biostudies-literature

Bis(ferrocene-carboxyl-ato-κO)bis-(2-pyridyl-methanol-κN,O)cobalt(II).

Project description:The title complex mol-ecule, [Fe(2)Co(C(5)H(5))(2)(C(6)H(4)O(2))(2)(C(6)H(7)NO)(2)], has a crystallographic imposed centre of symmetry. The Co(II) atom displays a distorted octa-hedral coordination geometry, provided by the O atoms of two monodentate ferrocene-carboxyl-ate anions and by the N and O atoms of two 2-pyridyl-methanol mol-ecule. The mol-ecular conformation is stabilized by intra-molecular C-H⋯O hydrogen bonds.

| S-EPMC3007041 | biostudies-literature

Bis(μ(2)-quinoline-2-carboxyl-ato)-κN,O:O;κO:N,O-bis-[(acetato-κO)(ethanol-κO)lead(II)].

Project description:In the centrosymmetric dinuclear title compound, [Pb(2)(C(10)H(6)NO(2))(2)(CH(3)COO)(2)(C(2)H(5)OH)(2)], one O atom of the carboxyl-ate group of the quinoline-2-carboxyl-ate anion connects the two Pb(II) atoms. The Pb(II) atom is surrounded by four O atoms and one N atom in a Ψ-octa-hedral PbO(4)NE geometry (E is the electron lone pair). Two longer Pb⋯O inter-actions distort the geometry towards a Ψ-square-anti-prism. Inter-molecular O-H⋯O hydrogen bonds link the mol-ecules.

| S-EPMC3051551 | biostudies-literature

Tetra-aqua-bis(2-oxo-1,2-dihydro-quinoline-4-carboxyl-ato-κO)nickel(II).

Project description:In the title compound, [Ni(C(10)H(6)NO(3))(2)(H(2)O)(4)], the central Ni(II) atom is located on an inversion center and coordinated in a slightly distorted octa-hedral geometry by two O atoms from two 2-oxo-1,2-dihydro-quinoline-4-carboxyl-ate ligands and four water mol-ecules, all of which act as monodentate ligands. The crystal structure features an extensive network of inter-molecular hydrogen-bonding inter-actions (O-H⋯O and N-H⋯O) and offset face-to-face π-π stacking inter-actions [centroid-centroid distances = 3.525 (3) and 3.281 (5) Å].

| S-EPMC2960272 | biostudies-literature

(Benzoato-κO,O')(quinoline-2-carboxyl-ato-κN,O)(quinoline-2-carboxylic acid-κN,O)copper(II).

Project description:The crystal structure of the title compound, [Cu(C(10)H(6)NO(2))(C(7)H(5)O(2))(C(10)H(7)NO(2))], contains copper(II) ions five-coordinated in a distorted trigonal-bipyramidal environment. The equatorial plane is occupied by three O atoms, one from the carboxyl-ate group of the benzoate ion considered as occupying a single coordination site, the other two from two carboxyl-ate groups of the quinaldic acid and quinaldate ligands. The axial positions are occupied by the N atoms of the quinoline ring system. The metal ion lies on a twofold axis that bisects the benzoate ion. The quinaldate and quinaldic acid ligands are equivalent by symmetry, and the carboxyl-ate/carboxyl groups are disordered. The disordered H atom is shared between the carboxyl-ate groups of adjacent quinaldic acid mol-ecules. Such hydrogen bonds delineate zigzag chains that run along the c axis. The structure is very similar to that of the Mn(II) analog.

| S-EPMC2961369 | biostudies-literature

(Benzoato-κO,O')(quinoline-2-carboxyl-ato-κN,O)(quinoline-2-carboxylic acid-κN,O)manganese(II).

Project description:The crystal structure of the title compound, [Mn(C(7)H(5)O(2))(C(10)H(6)NO(2))(C(10)H(7)NO(2))], contains manganese(II) ions six-coordinated in a distorted octa-hedral environment. The equatorial plane is occupied by four O atoms, two from the carboxyl-ate group of the benzoate ion, the other two from carboxyl-ate/carboxyl groups of the quinaldate/quinaldic acid mol-ecules. The axial positions are occupied by the N atoms of the quinoline ring systems. The metal ion lies on a twofold rotation axis that bisects the benzoate ligand; the quinaldate and quinaldic acid ligands are therefore equivalent by symmetry, and the carboxylate/carboxyl groups are disordered. The complexes are joined together by hydrogen bonds between the carboxyl-ate/carboxyl groups of adjacent quinaldate/quinaldic acid mol-ecules, forming zigzag chains that run along the c axis.

| S-EPMC2915171 | biostudies-literature

catena-Poly[[bis-(methanol-κO)bis-(pyridine-κN)nickel(II)]-μ-tetra-fluoro-terephthalato-κO:O'].

Project description:In the title compound, [Ni(C(8)F(4)O(4))(C(5)H(5)N)(2)(CH(4)O)(2)](n), the Ni(II) ion is located on an inversion center and is coordinated by four O atoms [Ni-O = 2.079 (4) Å] from two tetra-fluoro-terephthalate ligands and two methanol mol-ecules, and by two N atoms [Ni-N = 2.127 (4) Å] from two pyridine ligands in a distorted octa-hedral geometry. The Ni(II) ions are connected via the tetra-fluoro-terephthalate anions into a one-dimensional chain running along the crystallographic [011] direction.

| S-EPMC2961662 | biostudies-literature

μ-Biphenyl-3,3',4,4'-tetra-carboxyl-ato-κO:O-bis-[triaqua-(2,2'-bipyridyl-κN,N')nickel(II)] hexa-hydrate.

Project description:The asymmetric unit of the title complex, [Ni(2)(C(16)H(6)O(8))(C(10)H(8)N(2))(2)(H(2)O)(6)]·6H(2)O, contains one Ni(II) atom, one 2,2'-bipyridine ligand, three coordinated water mol-ecules, one-half of a fully deprotonated biphenyl-3,3',4,4'-tetra-carboxyl-ate anion and three lattice water mol-ecules. The Ni(II) atom displays a distorted NiN(2)O(4) octa-hedral coordination formed by one carboxyl-ate O atom, three water O atoms and two N atoms of the chelating ligand. The complete biphenyl-3,3',4,4'-tetra-carboxyl-ate ligand displays inversion symmetry and links two symmetry-related Ni(II) atoms into a binuclear complex. Neighbouring complex mol-ecules are linked through O-H⋯O hydrogen bonds into a three-dimensional structure. Additional O-H⋯O hydrogen bonds between the lattice water mol-ecules help to consolidate the crystal packing.

| S-EPMC2977608 | biostudies-literature

Bis(μ-5-carboxyl-ato-1-carboxyl-ato-methyl-2-oxidopyridinium)-κO:O;κO:O-[diaqua-(phenan-throline-κN,N')manganese(II)] dihydrate.

Project description:The centrosymmetric binuclear title complex, [Mn(2)(C(8)H(5)NO(5))(2)(C(12)H(8)N(2))(2)(H(2)O)(4)]·2H(2)O, was obtained by the reaction of manganese chloride with 5-carb-oxy-1-carboxy-methyl-2-oxidopyridinium and 1,10-phenanthroline. The Mn(II) atom is coordinated by two N atoms from the 1,10-phenanthroline ligand, two O atoms from two 5-carboxyl-ato-1-carboxyl-atomethyl-2-oxidopyridinium ligands and two water mol-ecules, leading to a distorted octahedral MnN(2)O(4) environment. Inter-molecular O-H⋯O hydrogen bonds link neighbouring mol-ecules into a layer structure parallel to (001).

| S-EPMC2969745 | biostudies-literature

Tetra-aqua-bis-(6-chloro-pyridine-3-carboxyl-ato-κO)nickel(II) tetra-hydrate.

Project description:In the title compound, [Ni(C(6)H(3)ClNO(2))(2)(H(2)O)(4)]·4H(2)O, the Ni(II) ion is located on an inversion centre and is octa-hedrally coordinated by four O atoms from four water mol-ecules in the equatorial plane and two O atoms of two 6-chloro-3-carboxyl-ate ligands in axial positions. There are also four lattice water molecules present. The organic ligands are bound to the Ni(II) ion in a monodentate manner through a carboxyl-ate O atom. There is one strong intra-molecular O-H⋯O hydrogen bond and six inter-molecular O-H⋯O and O-H⋯N hydrogen-bonding inter-actions in the packing, resulting in a complex three-dimensional network structure.

| S-EPMC3515138 | biostudies-literature

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