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Hexa-μ-acetato-1:2κ(4) O,O';1:2κ(2) O:O;2:3κ(4) O,O';2:3κ(2) O:O-bis-(4,4'-dimethyl-2,2'-bi-pyridine)-1κ(2) N,N';3κ(2) N,N'-2-calcium-1,3-dizinc.

ABSTRACT: In the centrosymmetric trinuclear Zn(II)⋯Ca(II)⋯Zn(II) title complex, [CaZn2(CH3COO)6(C12H12N2)2], the Ca(II) ion lies on an inversion centre and is octa-hedrally coordinated by six acetate O atoms. The Zn(II) ion is coordinated by two N atoms from a bidentate di-methyl-bipyridine ligand and three O atoms from acetate ligands bridging to the Ca(II) ion, leading to a distorted square-pyramidal coordination sphere. The Zn⋯Ca distance is 3.4668 (5) Å.

SUBMITTER: Pramanik A

PROVIDER: S-EPMC3884985 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of 4,4'-dimeth-oxy-2,2'-bi-pyridine.

Project description:In the title compound, C12H12N2O2, the dihedral angle between the planes of the two pyridine rings is 5.8 (1)°. Neighbouring mol-ecules are linked via C(Me)-H⋯N inter-actions, generating a two-dimensional sheet structure; C-H⋯π inter-actions further link the mol-ecules into a three-dimensional network. An overlapped arrangement of parallel pyridine rings in neighbouring mol-ecules [centroid-to-centroid distance = 3.6655 (15) Å] is observed in the crystal structure.

| S-EPMC4571430 | biostudies-literature

Di-μ 2-acetato-1:2κ (2) O:O';2:3κ (2) O:O'-bis-{μ 2-4,4'-di-chloro-2,2'-[2,2-di-methyl-propane-1,3-diylbis(nitrilo-methanylyl-idene)]diphenolato}-1:2κ (6) O,N,N',O':O,O';2:3κ (6) O,O':O,N,N',O'-tri-cadmium.

Project description:In the title linear homo-trinuclear complex, [Cd3(C19H18Cl2N2O2)2(C2H3O2)2], the central Cd(II) atom is located on a centre of inversion and has a distorted octa-hedral coordination geometry formed by four O atoms from two bidentate/tetra-dentate Schiff base ligands and two O atoms from two bridging acetate ligands. The coordination geometry of the terminal Cd(II) atom is square-pyramidal with the tetra-dentate part of the ligand in the basal plane and one O atom from an acetate ligand occupying the apical site. The six-membered CdN2C3 ring adopts a chair conformation. The acetate-bridged Cd⋯Cd distance is 3.3071 (2) Å. The crystal structure is stabilized by C-H⋯O hydrogen bonds, which form C(7) chain motifs and give rise to a two-dimensional supra-molecular network structure lying parallel to the ab plane.

| S-EPMC3884977 | biostudies-literature

Bis[3,5-di-fluoro-2-(pyridin-2-yl)phen-yl](4,4'-di-meth-oxy-2,2'-bi-pyridine)-iridium(III) hexa-fluorido-phosphate.

Project description:The title cyclo-metalated distorted octa-hedral iridium complex, [Ir(C11H6F2N)2(C12H12N2O2)]PF6, exhibits elongated Ir-N bonds to the dimeth-oxy bi-pyridine ligand [2.128 (3) and 2.136 (3) Å] where these nitro-gen atoms are trans to the Ir-C bonds of the two cyclo-metalating di-fluoro-phenyl-pyridine ligands. The angles between the mean planes of the phenyl and pyridyl fragments within the individual ligands range from 3.5 (2) to 11.4 (2)° to deviate slightly from coplanarity.

| S-EPMC9635420 | biostudies-literature

Crystal structure of bis-(acetato-?O)di-aqua-(2,2'-bi-pyridine-?(2) N,N')manganese(II).

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| S-EPMC4186102 | biostudies-literature

Poly[di-μ(2)-acetato-diaquabis(2,2'-bi-pyridine)bis(μ(3)-5-nitroisophthalato)tricobalt(II)].

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| S-EPMC2977571 | biostudies-literature

Crystal structure of poly[[hexa-qua-1κ(4) O,2κ(2) O-bis-(μ3-pyridine-2,4-di-car-box-ylato-1κO (2):2κ(2) N,O (2');1'κO (4))cobalt(II)-strontium(II)] dihydrate].

Project description:In the title polymeric complex, {[CoSr(C7H3NO4)2(H2O)6]·2H2O} n , the Co(II) ion, which is situated on a crystallographic centre of inversion, is six-coordinated by two O atoms and two N atoms from two pyridine-2,4-di-carboxyl-ate (pydc(2-)) ligands and two terminal water mol-ecules in a slightly distorted octa-hedral geometry, to form a trans-[Co(pydc)2(H2O)2](2-) unit. The Sr(II) ion, situated on a C 2 axis, is coordinated by four O atoms from four pydc(2-) ligands and four water mol-ecules. The coordination geometry of the Sr(II) atom can be best described as a distorted dodeca-hedron. Each Sr(II) ion bridges four [Co(pydc)2(H2O)2](2-) units by four COO(-) groups of four pydc(2-) ligands to form a three-dimensional network structure. Two additional solvent water mol-ecules are observed in the crystal structure and are connected to the three-dimensional coordination polymer by O-H⋯O hydrogen bonds. Further intra- and intermolecular O-H⋯O hydrogen bonds consolidate the overall structure.

| S-EPMC4555429 | biostudies-literature

4,4',6,6'-Tetra-methyl-2,2'-bipyrimidine hexa-hydrate.

Project description:In the title compound, C(12)H(14)N(4)·6H(2)O, the two pyrimidine rings make a dihedral angle of 5.285 (6)°. Inter-molecular O-H⋯O hydrogen bonds link the six water mol-ecules, generating edge-fused four-, five- or six-membered ring motifs and forming two-dimensional sheets. The sheets are stabilized by the formation of O-H⋯N hydrogen bonds between the water mol-ecules and the bipyrimidine mol-ecules, resulting in a three-dimensional network.

| S-EPMC2968866 | biostudies-literature

Dichlorido(4,4'-di-tert-butyl-2,2'-bi-pyridine-κN,N')gold(III) tetrachlorido-aurate(III) acetonitrile solvate.

Project description:In the title compound, [AuCl(2)(C(9)H(12)N)(2)][AuCl(4)]·C(2)H(3)N, there is a mirror plane passing through Au and the central C-C bond of the bipyridyl ligand in the cation, and through Au and two Cl atoms of the anion. A cis-AuCl(2)N(2) square-planar geometry for the cation and a square-planar AuCl(4) geometry for the anion result. The two C atoms and the N atom of the acetonitrile mol-ecule all have m site symmetries. In the crystal structure, weak C-H⋯Cl inter-actions may help to establish the packing.

| S-EPMC2960475 | biostudies-literature

Di-chlorido-(4,4'-di-tert-butyl-2,2'-bi-pyridine-?(2) N,N')palladium(II) dimethyl sulfoxide monosolvate monohydrate.

Project description:The title compound, [PdCl2(C18H24N2)]·(CH3)2SO·H2O, the Pd(II) ion is in a distorted square-planar geometry. The Pd-N bond distances are 2.022?(2) and 2.027?(2)?Å, the Pd-Cl bond distances are 2.2880?(7) and 2.2833?(7)?Å, and the ligand bite angle is 80.07?(9)°. The dimethyl sulfoxide and water mol-ecules form linear chains along [100] by O-H?O and O-H?S hydrogen bonds, generating eight- and 12-membered rings. C-H?Cl inter-actions link the chains, forming a three-dimensional arrangement. In addition, the 4,4-di-tert-butyl-2,2'-bi-pyridine ligand exhibits ?-? stacking inter-actions [centroid-centroid distances = 3.8741?(15) and 3.8353?(15)?Å]. The DMSO solvent is disordered and was refined with an occupancy ratio of 0.866?(3):0.134?(3).

| S-EPMC4051021 | biostudies-literature

(2,2'-Bi-pyridine)-chlorido-[diethyl (2,2':6',2''-terpyridin-4-yl)phospho-nate]ruthenium(II) hexa-fluorido-phosphate aceto-nitrile/water solvate.

Project description:The cationic complex in the title compound, [RuCl(C10H8N2)(C19H20N3O3P)]PF6·0.83CH3CN·0.17H2O, is a water-oxidation precatalyst functionalized for TiO2 attachment via terpyridine phospho-nate. The The Ru(II) atom in the complex has a distorted octa-hedral geometry due to the restricted bite angle [159.50?(18)°] of the terpyridyl ligand. The dihedral angle between the least-squares planes of the terpyridyl and bipyridyl moieties is 86.04?(14)°. The mean Ru-N bond length for bi-pyridine is 2.064?(5)?Å, with the bond opposite to Ru-Cl being 0.068?Å shorter. For the substituted terpyridine, the mean Ru-N distance involving the outer N atoms trans to each other is 2.057?(6)?Å, whereas the bond length involving the central N atom is 1.944?(5)?Å. The Ru-Cl distance is 2.4073?(15)?Å. The P atom of the phospho-nate group lies in the same plane as its adjacent pyridyl ring, with the ordinary character of the bond between P and Ctpy [1.801?(6)?Å] allowing for free rotation of the terpyridine substituent around the P-Ctpy axis. The aceto-nitrile solvent mol-ecule was refined to be disordered with two water mol-ecules; occupancies for the acetontrile and water mol-ecules were 0.831?(9) and 0.169?(9), respectively. Also disordered was the PF6 (-) counter-ion (over three positions) and one of the eth-oxy substituents (with two positions). The crystal structure shows significant intra- and inter-molecular H?X contacts, especially some involving the Cl(-) ligand.

| S-EPMC3884400 | biostudies-literature

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