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Cis-Aqua-bis(2,4-dichloro-6-formyl-phenolato-κO,O')(N,N-dimethyl-formamide-κO)nickel(II).

ABSTRACT: In the title compound, [Ni(C(7)H(3)Cl(2)O(2))(2)(C(3)H(7)NO)(H(2)O)], the Ni(II) ion is coordinated by four O atoms from two bidentate 2,4-dichloro-6-formyl-phenolate ligands, one O atom from a water ligand and one O atom from a dimethyl-formamide ligand in a slightly distorted octa-hedral environment. In the crystal structure, centrosymmetric dimers are formed though O-H⋯O and O-H⋯Cl hydrogen bonds; π-π stacking inter-actions, with a centroid-centroid distance of 3.796 (2) Å, are also found.

SUBMITTER: Chen FY

PROVIDER: S-EPMC2961979 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Diaqua-bis(2,4-dichloro-6-formyl-phenolato)zinc(II)-bis-(?-2,4-dichloro-6-formyl-phenolato)bis-[aqua-(2,4-dichloro-6-formyl-phenolato)zinc(II)] (2/1).

Project description:The crystal of the title compound, [Zn(C(7)H(3)Cl(2)O(2))(2)(H(2)O)(2)](2)·[Zn(2)(C(7)H(3)Cl(2)O(2))(4)(H(2)O)(2)], consists of monomeric and dimeric Zn(II) complexes. Both complexes afford a six-coordinated coordination environment about the Zn atoms with cis-configuration ligands. The deprotonated hydr-oxy groups of the 3,5-dichloro-salicylaldehyde ligands bridge two metal cations, forming a centrosymmetric dimeric complex. Inter-molecular O-H?O hydrogen bonding occurs between the coordinated water mol-ecules and deprotonated hydr-oxy groups in the crystal structure.

| S-EPMC2972068 | biostudies-literature

catena-Poly[copper(II)-bis(μ-2,4-dichloro-6-formyl-phenolato)-κO,O':Cl;κCl:O,O'].

Project description:In the title compound, [Cu(C(7)H(3)Cl(2)O(2))(2)](n), the Cu(II) atom lies on a centre of inversion and adopts a [4+2] coordination mode, with two long axial Cu-Cl coordinative bonds complementing four Cu-O bonds from two 2,4-dichloro-6-formyl-phenolate ligands in a distorted square plane. π-π stacking inter-actions are also formed between neighbouring aromatic rings, with a centroid-centroid separation of 3.624 (2) Å.

| S-EPMC2961934 | biostudies-literature

Bis(2,4-dibromo-6-formyl-phenolato-κO,O')copper(II).

Project description:In the title compound, [Cu(C(7)H(3)Br(2)O(2))(2)], the Cu(II) atom, which lies on an inversion centre, is coordinated by four O atoms from two chelating bidentate 2,4-dibromo-6-formyl-phenolate ligands in a slightly distorted square-planar coordination geometry. In the crystal structure, short inter-molecular Br⋯Br [3.516 (4) and 3.653 (4) Å] and Cu⋯Br [3.255 (1) Å] contacts together with C-H⋯O hydrogen bonds generate a three-dimensional network.

| S-EPMC2914936 | biostudies-literature

cis-[Aqua/methanol(0.45/1.55)](1,1,1-trifluoro-5,5-dimethyl-hexane-2,4-dionato)nickel(II)-cis-[aqua/methanol(1.49/0.51)](1,1,1-trifluoro-5,5-dimethyl-hexane-2,4-dionato)nickel(II) (1/1).

Project description:The title compound, [Ni(C(8)H(10)F(3)O(2))(2)(CH(4)O)(1.55)(H(2)O)(0.45)][Ni(C(8)H(10)F(3)O(2))(2)(CH(4)O)(0.51)(H(2)O)(1.49)], is an octa-hedral nickel(II) complex with two acetyl-acetonate-like 1,1,1-trifluoro-5,5-dimethyl-hexane-2,4-dionate ligands. The two chelating ligands are in cis positions with respect to each other and the remaining two adjacent coordination sites are taken up by water and methanol donor mol-ecules. In both crystallographically independent mol-ecules, each donor site shows disorder of methanol and water with occupancies of 0.51?(1) and 0.55?(1) in favor of methanol. The remaining two donor sites are not disordered and are water for the first and methanol for the second independent mol-ecule. Rotational disorder is observed for one of the tert-butyl groups, the occupancy rate for the major component here is 0.687?(9). O-H?O hydrogen bonds connect the two independent mol-ecules with each other and, across a crystallographic inversion center, they are combined with two neighboring mol-ecules to form a centrosymmetric hydrogen-bonded tetra-mer.

| S-EPMC2968228 | biostudies-literature

Bis(2-eth-oxy-6-formyl-phenolato-κO,O)nickel(II).

Project description:The title compound, [Ni(C(9)H(9)O(3))(2)], was synthesized by the reaction of 3-ethoxy-salicylaldehyde with nickel(II) nitrate in methanol solution. The asymmetric unit onsists of two half-molecules; each Ni atom lies on a centre of symmetry. The Ni(II) ions are coordinated by four O atoms from two deprotonated 3-ethoxy-salicylaldehyde ligands in a slightly distorted square-planar coordination environment.

| S-EPMC2960901 | biostudies-literature

Hexakis(1H-imidazole-?N)nickel(II) bis-(2,4-dibromo-6-formyl-phenolate) N,N-dimethyl-formamide disolvate.

Project description:In the cation of the title compound, [Ni(C(3)H(4)N(2))(6)](C(7)H(3)Br(2)O(2))(2)·2C(3)H(7)NO, the Ni(II) ion lies on an inversion center and is coordinated in a slightly distorted octa-hedral environment by six N atoms from six imidazole ligands. In the crystal structure, cations, anions and solvent mol-ecules are linked by inter-molecular N-H?O hydrogen bonds into one-dimensional chains along [010]. In addition, the crystal structure is stabilized by weak C-H?O and C-H?N hydrogen bonds.

| S-EPMC2961690 | biostudies-literature

Redetermination of bis-(2-formyl-phenolato-κO,O')nickel(II) as bis-[2-(imino-meth-yl)phenolato-κN,O']nickel(II).

Project description:The crystal structure of bis-(2-formyl-phenolato-κ(2)O,O')nickel(II), [Ni(C(7)H(5)O(2))(2)], a square-planar centrosymmetric complex, has been reported previously [Li & Chen (2006). Acta Cryst. E62, m1038-m1039]. However, a number of warning signs allows the assumption that the carbonyl group in the salicylaldehydate ligand of the claimed complex is incorrect. The crystal structure was therefore redetermined on basis of the originally deposited structure factors. After substituting the carbonyl O atom by an N atom, the model can be completed with an imine H atom, which was clearly discernible in a difference map. The resulting model, corresponding to bis-[2-(imino-meth-yl)phenolato-κ(2)N,O']nickel(II), [Ni(C(7)H(6)NO)(2)], converges well and none of the previous structural alerts remains. This reinter-pretation is also consistent with the published synthesis, which was carried out using salicylaldehyde in the presence of aqueous NH(3). The reinter-preted structure is virtually identical to earlier reports dealing with this bis-iminato Ni(II) complex.

| S-EPMC2979995 | biostudies-literature

Aqua-(2,9-dimethyl-1,10-phenanthroline-κN,N')diformato-κO,O';κO-nickel(II) monohydrate.

Project description:The asymmetric unit of the title compound, [Ni(HCO(2))(2)(C(14)H(12)N(2))(H(2)O)]·H(2)O, contains a mononuclear complex mol-ecule hydrogen bonded to a lattice water mol-ecule. The Ni(II) atom exhibits a distorted octa-hedral coordination geometry formed by the N atoms from a 2,9-dimethyl-1,10-phenanthroline ligand, two O atoms of a chelating formate anion, one aqua O atom and one O atom of a coordinating formate anion. The mol-ecules are assembled into chains extending along [100] through by O-H⋯O hydrogen bonds. The supra-molecular chains are further linked into layers parallel to (011) by weak π-π packing inter-actions [centroid-centroid separation = 3.768 (2) Å]. The resulting layers are stacked to meet the requirement of close-packing patterns.

| S-EPMC3200966 | biostudies-literature

Tetra-aqua-bis[2-(2,4-dichloro-phen-oxy)acetato]nickel(II).

Project description:In the title complex, [Ni(C(8)H(5)Cl(2)O(3))(2)(H(2)O)(4)], the Ni(II) atom (site symmetry ) adopts a slightly distorted NiO(6) octa-hedral coordination. An intra-molecular O-H⋯O hydrogen bond helps to establish the conformation. In the crystal, further O-H⋯O hydrogen bonds link the mol-ecules.

| S-EPMC2969976 | biostudies-literature

Bis[2,4-dichloro-6-(ethyl-imino-meth-yl)phenolato-?N,O]nickel(II).

Project description:In the title compound, [Ni(C(9)H(8)Cl(2)NO)(2)], the Ni(II) ion lies on an inversion centre and is coordinated in a slightly distorted square-planar geometry by an N and an O atom from two symmetry-related bidentate 2,4-dichloro-6-(ethyl-imino-meth-yl)phenolate ligands. In the crystal structure, there are short Cl?Cl distances of 3.506?(1) and 3.350?(1)?Å.

| S-EPMC3247532 | biostudies-literature

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