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

ABSTRACT: 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.

SUBMITTER: Li GZ

PROVIDER: S-EPMC2914936 | 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

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

Project description: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.

| S-EPMC2961979 | 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

Bis{?-2-[(pyridin-2-yl)imino-meth-yl]phenolato}bis-[(2-formyl-phenolato)copper(II)].

Project description:The asymmetric unit of the title compound, [Cu(2)(C(12)H(9)N(2)O)(2)(C(7)H(5)O(2))(2)], contains two independent (2-formyl-phen-olato){2-[(pyridin-2-yl)imino-meth-yl]phenolato}copper(II) mol-ecules that form pseudocentrosymmetric dimers via inter-actions between the Cu and pyridyl N atoms of independent monomers. The square-planar geometry of the Cu atoms in the monomer thus becomes square-based pyramidal in the dimer. The crystal studied was an inversion twin, with unequal populations of 0.353?(17) and 0.647?(17).

| S-EPMC3120375 | biostudies-literature

(2-Formyl-6-methoxy-phenolato-κO,O)(perchlorato-κO)(1,10-phenanthroline-κN,N')copper(II).

Project description:In the title mol-ecule, [Cu(C(8)H(7)O(3))(ClO(4))(C(12)H(8)N(2))], the Cu(II) ion is five-coordinated by two N atoms [Cu-N = 1.995 (3) and 2.022 (3) Å] from a 1,10-phenanthroline ligand, two O atoms [Cu-O = 1.908 (2) and 1.927 (2) Å] from an o-vanillin ligand and one O atom [Cu-O = 2.510 (3) Å] from a perchlorate anion in a distorted square-pyramidal geometry. Three O atoms of the perchlorate anion are rotationally disordered between two orientations, with occupancies of 0.525 (13) and 0.475 (13). In the crystal structure, two mol-ecules related by a centre of symmetry are paired in such a way that the phenolate O atom from one mol-ecule completes the distorted octa-hedral Cu coordination in another mol-ecule [Cu⋯O = 2.704 (2) Å].

| S-EPMC2961256 | biostudies-literature

Bis[2-(benzyl-amino)-pyridine-κN]bis-(2-formyl-phenolato-κO,O')nickel(II).

Project description:In the title complex, [Ni(C(7)H(5)O(2))(2)(C(12)H(12)N(2))(2)], the Ni(II) atom lies on a center of inversion and is coordinated in an octa-hedral geometry by two 2-(benzyl-amino)-pyridine (2-BAP) and two 2-formyl-phenolate ligands with the O-atom donors in the equatorial plane and the pyridine N atoms in axial positions. There are hydrogen-bonding inter-actions between the secondary amine H atom and the phenolate O atom, as well as C-H⋯O inter-actions, which result in the dihedral angle between the aromatic phenyl ring of the 2-formyl-phenolate moiety and the pyridine ring being 80.23 (4)°. In the packing, there are both C-H⋯π inter-actions, which link the mol-ecules into chains along the b axis, and offset π-π inter-actions involving both the pyridine and phenyl rings of the 2-BAP ligands [centroid-centroid distances = 4.0100 (8) Å for the pyridine rings and 3.6601 (8) and 4.8561 (8) Å for the phenyl rings].

| S-EPMC3051610 | biostudies-literature

Bis[2,4-dibromo-6-(ethyl-imino-methyl)phenolato-κN,O]cobalt(II).

Project description:In the title compound, [Co(C(9)H(8)Br(2)NO)(2)], the Co(II) atom, located on a twofold axis, is in a pseudo-tetra-hedral environment, with two bidentate 2,4-dibromo-6-(ethyl-imino-meth-yl)phenolate Schiff base ligands acting as chelates through their phenolate O and azomethine N atoms. C-H⋯O hydrogen bonds link the complex mol-ecules to form a chain parallel to the b axis.

| S-EPMC3007887 | 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

Bis[2,4-dibromo-6-(n-propyl-imino-methyl)phenolato-κN,O]cobalt(II).

Project description:In the title complex, [Co(C(10)H(10)Br(2)NO)(2)], the Co(II) atom lies on a twofold rotation axis, the N(2)O(2) units having distorted tetra-hedral coordination environments comprising two bidentate chelate 2,4-dibromo-6-(n-propyl-imino-meth-yl)phenolate Schiff base ligands [Co-N = 1.989 (3) Å, Co-O = 1.924 (2) Å and O/N-Co-O/N = 94.53 (10)-125.40 (15)°]. In the crystal structure, the mol-ecules are linked via weak inter-molecular C-H⋯O hydrogen bonds [3.334 (5) Å] and there are also short inversion-related intermolecular Br⋯Br contacts [3.4263 (6) Å].

| S-EPMC3008039 | biostudies-literature

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