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Bis(formato-?O)bis-[1-(pyridin-2-yl)ethanone oxime-?N,N']nickel(II).

ABSTRACT: In the title compound, [Ni(HCOO)(2)(C(7)H(8)N(2)O)(2)], the Ni atom is six-coordinated by four N atoms from two oxime ligands and by two O atoms from two formate ions in a distorted octa-hedral geometry, with the oxime-N atoms mutually trans. The mol-ecular conformation is stabilized by intra-molecular O-H?O hydrogen bonds.

SUBMITTER: Li L

PROVIDER: S-EPMC3254275 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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Bis(formato-κO)bis-[1-(pyridin-2-yl)ethanone oxime-κN,N']nickel(II).

Li Leilei L Qiu Xiumin X Li Dacheng D

Acta crystallographica. Section E, Structure reports online 20111203 Pt 1

In the title compound, [Ni(HCOO)(2)(C(7)H(8)N(2)O)(2)], the Ni atom is six-coordinated by four N atoms from two oxime ligands and by two O atoms from two formate ions in a distorted octa-hedral geometry, with the oxime-N atoms mutually trans. The mol-ecular conformation is stabilized by intra-molecular O-H⋯O hydrogen bonds. ...[more]

PMID: 22259326

Similar Datasets

Chlorido[1-(pyridin-2-yl)ethanone oximato-?N,N'][1-(2-pyrid-yl)ethanone oxime-?N,N']copper(II) trihydrate.

Project description:In the title compound, [Cu(C(7)H(7)N(2)O)Cl(C(7)H(8)N(2)O)]·3H(2)O, the metal ion is five-coordinated by the N atoms from the 1-(pyridin-2-yl)ethanone oximate and 1-(pyridin-2-yl)ethanone oxime ligands and by the chloride anion in a distorted square-pyramidal geometry. The distortion parameter is 0.192. The two organic ligands are linked by an intra-molecular O-H?O hydrogen bond. In the crystal, mol-ecules are linked by O-H?O and O-H?Cl hydrogen bonds. The title compound is the hydrated form of a previously reported structure [Wu & Wu (2008 ?). Acta Cryst. E64, m828]. There are only slight variations in the mol-ecular geometries of the two compounds.

| S-EPMC3238715 | biostudies-literature

Aqua[1-(pyridin-2-yl)ethanone oximato][1-(2-pyridin-2-yl)ethanone oxime]-copper(II) perchlorate mono-hydrate.

Project description:In the title compound, [Cu(C?H?N?O)(C?H?N?O)(H?O)]ClO?·H?O, the Cu(II) ion is five-coordinated by the N atoms from the 1-(pyridin-2-yl)ethanone oximate and 1-(pyridin-2-yl)ethan-one oxime ligands and by the water O atom in a distorted square-pyramidal geometry. The two organic ligands are linked by an intra-molecular O-H?O hydrogen bond. In the crystal, mol-ecules and ions are linked by O-H?O hydrogen-bonding inter-actions, forming chains along the a axis. The perchlorate O atoms are disordered in a 0.58?(2):0.42?(2) ratio.

| S-EPMC3393154 | biostudies-other

trans-Diaqua-bis-[2,5-bis-(pyridin-2-yl)-1,3,4-thia-diazole]nickel(II) bis-(tetra-fluoridoborate).

Project description:The bidentate 1,3,4-thia-diazole ligand, namely, 2,5-bis-(2-pyrid-yl)-1,3,4-thia-diazole (denoted L), untested as a polydentate ligand, has been found to form the monomeric title complex, [Ni(C(12)H(8)N(4)S)(2)(H(2)O)(2)](BF(4))(2). The complex shows an octa-hedral environment of the nickel cation in which the Ni(2+) ion is located on a center of symmetry, linked to two ligands and two water molecules. In this 1:2 complex (one metal for two organic ligands) each thia-diazole ligand uses one pyridyl and one thia-diazole N atom for chelate binding. In the second pyridyl substituent, the N atom is oriented towards the same direction as the S atom of the 1,3,4-thiadiazole ring. The mean plane of the thia-diazole and pyridyl rings linked to the nickel cation forms a dihedral angle with the other pyridine ring of 18.63?(8)°. The tetra-fluorido-borate ions can be regarded as free anions in the crystal lattice. Nevertheless, they are involved in an infinite two-dimensional network parallel to ([Formula: see text]01) through O-H?F hydrogen bonds.

| S-EPMC3212138 | biostudies-literature

Poly[aqua-bis-(?-formato-?O:O')(?-pyrazine-?N:N')nickel(II)].

Project description:In the title compound, [Ni(CHO(2))(2)(C(4)H(4)N(2))(H(2)O)], the nickel(II) cations are coordinated by three O-bonded-formato anions, two N-bonded-pyrazine ligands and one water mol-ecule in an octa-hedral coordination mode. The nickel(II) cations are connected by ?-1,3-bridging formato anions and N,N'-bridging pyrazine ligands into a three dimensional coordination network. The asymmetric unit consists of one nickel(II) cation, one water mol-ecule and two crystallograph-ically independent formato anions in general positions as well as two crystallographically independent pyrazine ligands, which are located on centers of inversion.

| S-EPMC3089312 | biostudies-literature

Aqua-[1-(pyrazin-2-yl)ethanone oximato-?²N,N'][1-(pyrazin-2-yl)ethanone oxime-?²N,N'](thio-cyanato-?N)nickel(II).

Project description:In the title complex, [Ni(C?H?N?O)(NCS)(C?H?N?O)(H?O)] or [Ni(mpko)(SCN)(mpkoH)(H?O)] [where mpkoH = 1-(pyrazin-2-yl)ethanone oxime], the Ni(II) cation is in a slightly distorted octa-hedral geometry, being coordinated in the equatorial plane by four N atoms from two different mpkoH ligands, one of which is deprotonated, and by one N atom from a thio-cyanate anion and one O atom from a water mol-ecule in the axial positions. There is an intra-molecular O-H?O hydrogen bond involving the oxime units of the two ligands. In the crystal, a three-dimensional supra-molecular architecture is formed by O-H?O and O-H?N hydrogen bonds.

| S-EPMC3393160 | biostudies-other

Dibromidobis{1-[4-(pyridin-4-yl)phen-yl]ethanone-?N}mercury(II).

Project description:In the title compound, [HgBr(2)(C(13)H(11)NO)(2)], the Hg(II) atom adopts a four-coordinated HgN(2)Br(2) geometry, formed by two pyridine N atoms from two ligands and two bromide anions. The complex is located on a twofold axis. The coordination geometry is close to forming a see-saw (SS-4) polyhedron, the symmetry-related organic ligands being almost perpendicular; the dihedral angles between the two pyridine rings and between the two benzene rings are 85.5?(4) and 87.7?(4)°, respectively. Within the organic ligand, the pyridine ring is nearly coplanar with the benzene ring [dihedral angle = 13.1?(8)°]. In the crystal, the mol-ecular complexes are connected through weak inter-molecular C-H?Br contacts.

| S-EPMC3238744 | biostudies-literature

Tetra-kis{1-[4-(1H-imidazol-1-yl-?N(3))phen-yl]ethanone}bis-(isothio-cyanato-?N)nickel(II).

Project description:The title complex mol-ecule, [Ni(NCS)(2)(C(11)H(10)N(2)O)(4)], has a crystallographically imposed centre of symmetry. The Ni(II) atom is coordinated by the N atoms of two trans-arranged NCS(-) anions and four 1-[4-(1H-imidazol-1-yl)phen-yl]ethan-one ligands in a distorted octa-hedral geometry. In the crystal, C-H?S hydrogen bonds link the complex mol-ecules into chains parallel to the b axis. The chains are further connected by C-H?O hydrogen bonds, forming layers parallel to the bc plane.

| S-EPMC3393218 | biostudies-literature

catena-Poly[[diaqua-nickel(II)]-bis-(μ-2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetato)].

Project description:In the title compound, [Ni(C(9)H(6)N(3)O(3)S)(2)(H(2)O)(2)](n), the Ni(II) atom, located on an inversion center, is ligated in an octa-hedral geometry by two carboxyl-ate O atoms from two 2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetate (L) ligands and two O atoms from water mol-ecules in the equatorial plane, and two pyridine N atoms from other two L ligands at the apical sites. Two L ligands bridge pairs of metal atoms in an anti-parallel manner, forming centrosymmetric dinuclear quasi-recta-ngular units which are linked into infinite double-stranded chains parallel to [100]. O-H⋯O hydrogen bonds between the coordinating water mol-ecules and the carboxyl-ate groups of the L ligand as well as interchain S⋯N inter-actions [2.726 (2)-3.363 (2) Å] lead to the formation of a layer structure parallel to (001).

| S-EPMC3379099 | biostudies-literature

Bis{S-benzyl 3-[(6-methyl-pyridin-2-yl)methyl-idene]dithio-carbazato}nickel(II).

Project description:The asymmetric unit of the title compound, [Ni(C(15)H(14)N(3)S(2))(2)], consists of two independent mol-ecules with similar configurations. Each Ni(2+) cation is coordinated in a cis-mode by two tridentate N,N',S-chelating Schiff base ligands, creating a distorted octa-hedron [the smallest angle being 77.57?(7)° and the widest being 168.97?(7)° for one mol-ecule, and 78.04?(7) and 167.55?(7)° for the second mol-ecule]. The dihedral angle between the mean coordination planes of the two ligands is 86.76?(7)° for one and 89.99?(7)° for the second mol-ecule. ?-? inter-actions between neighbouring pyridine rings with plane-to-plane distances of 3.540?(1) and 3.704?(1)?Å are observed.

| S-EPMC3344386 | biostudies-literature

The crystal structure of bis-[(E)-4-bromo-2-({[2-(pyridin-2-yl)eth-yl]imino}-meth-yl)phenol]nickel(II) bis-[(E)-4-bromo-2-({[2-(pyridin-2-yl)eth-yl]imino}-meth-yl)phenolato]nickel(II) bis(perchlorate) methanol monosolvate, a structure containing strong inter-species hydrogen bonds.

Project description:The title compound, [Ni(C14H12BrN2O)2][Ni(C14H13BrN2O)2](ClO4)2·CH3OH consists of two mononuclear ([Ni(HL)2]2+ and [NiL2]) complex mol-ecules linked by strong hydrogen bonding [O⋯O separations of only 2.430 (5) Å], which is the shortest reported to date for such species. In one of the complexes, both the coordinated phen-oxy groups retain their protons and thus this is the cationic equivalent species of the other complex where both coordinated phen-oxy groups are deprotonated. In addition, perchlorate anions are present for charge balance, as well as methanol solvate mol-ecules. For the neutral NiL2 complex, each 2-ethyl-amine-pyridine arm is disordered over two equivalent conformations with occupancies of 0.750 (8):0.250 (8). The perchlorate anion is disordered over two equivalent conformations with occupancies of 0.602 (8):0.398 (8). The perchlorate ions also link to the H atoms on the methanol methyl and hydroxyl groups. These inter-actions link the moieties into a complex three-dimensional array. The crystal studied was refined as a two-component twin.

| S-EPMC6072980 | biostudies-literature

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