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Diaqua-bis(4-bromo-2-formyl-phenolato-?O,O')cobalt(II).

ABSTRACT: In the title complex, [Co(C(7)H(4)BrO(2))(2)(H(2)O)(2)], the Co(II) ion, which lies on a crystallographic inversion center, is coordin-ated by four O atoms from two bidentate 4-bromo-2-formyl-phenolate ligands and two O atoms from two water ligands in a slightly distorted octa-hedral environment. In the crystal structure, one-dimensional chains are formed through inter-molecular O-H?O hydrogen bonds, which are further linked into a two-dimensional network through Br?Br inter-actions [Br?Br = 3.772?(4)?Å].

SUBMITTER: Xiao Y

PROVIDER: S-EPMC2959384 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

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Diaqua-bis(4-bromo-2-formyl-phenolato-κO,O')cobalt(II).

Xiao Yu Y Zhang Min M

Acta crystallographica. Section E, Structure reports online 20080906 Pt 10

In the title complex, [Co(C(7)H(4)BrO(2))(2)(H(2)O)(2)], the Co(II) ion, which lies on a crystallographic inversion center, is coordin-ated by four O atoms from two bidentate 4-bromo-2-formyl-phenolate ligands and two O atoms from two water ligands in a slightly distorted octa-hedral environment. In the crystal structure, one-dimensional chains are formed through inter-molecular O-H⋯O hydrogen bonds, which are further linked into a two-dimensional network through Br⋯Br inter-actions [Br⋯Br = 3.7 ...[more]

PMID: 21200991

Similar Datasets

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.

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Diaqua-bis-(4-formyl-benzoato-?O(1))bis-(nicotinamide-?N(1))cobalt(II).

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Diaqua-bis(N,N-diethyl-nicotinamide-κN)bis-(4-formyl-benzoato-κO)cobalt(II).

Project description:In the crystal structure of the title Co(II) complex, [Co(C(8)H(5)O(3))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], the metal centre is located on an inversion center and is coordinated by two 4-formyl-benzoate (FOB), two diethyl-nicotinamide (DENA) ligands and two water mol-ecules in a slightly distorted CoO(4)N(2) octa-hedral geometry. In the crystal structure, O-H⋯O hydrogen bonds link the mol-ecules into infinite chains. π-π contacts between the parallel pyridine rings of neighboring DENA ligands [centroid-centroid distance = 3.652 (3) Å] further stabilize the crystal structure.

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Project description:In the mononuclear title compound, [Co(C(7)H(4)BrO(2))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], the Co(II) ion is located on a crystallographic inversion center. The asymmetric unit is completed by one 2-bromo-benzoate anion, one diethyl-nicotinamide (DENA) ligand and one coordinated water mol-ecule; all ligands are monodentate. The four O atoms in the equatorial plane around Co(II) form a slightly distorted square-planar arrangement, while the slightly distorted octa-hedral coordination is completed by the two pyridine N atoms of the DENA ligands in axial positions. The dihedral angle between the carboxyl-ate group and the attached benzene ring is 84.7 (1)°; the pyridine and benzene rings are oriented at a dihedral angle of 43.64 (6)°. In the crystal structure, inter-molecular O-H⋯O and C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network.

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Project description:The asymmetric unit of the title compound, [Ni(C(7)H(4)ClO(2))(2)], contains one half-mol-ecule. The Ni(II) ion, lying on an inversion centre, is four-coordinated by O atoms of 5-chloro-salicylaldehydate ligands in a square-planar geometry.

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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).

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Diaqua-bis(2,2'-biimidazole)cobalt(II) dichloride.

Project description:There are independent cations and four chloride anions in the crystal structure of the title complex, [Co(C(6)H(6)N(4))(2)(H(2)O)(2)]Cl(2). In each cation, the Co(II) cation is coordinated by four N atoms from two biimidazole and two O atoms of two water mol-ecules; one Co atom is at a position of site symmetry m, the other at a position of site symmetry 2/m. All Cl(-) ions and water mol-ecules are also located on the mirror plane. Each structural unit is connected through O-H?Cl and N-H?Cl inter-molecular hydrogen bonds, forming a three-dimensional supramolecular structure.

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Bis(?-4-fluoro-2,6-diformyl-phenolato)bis-[diaqua-nickel(II)] dichloride.

Project description:In the title dinuclear nickel(II) complex, [Ni(2)(C(8)H(4)FO(3))(2)(H(2)O)(4)]Cl(2), synthesized by the reaction between 4-fluoro-2,6-diformyl-phenol and nickel(II) chloride in methanol, the coordination cation is located on an inversion center and the Ni(II) atom adopts a slightly distorted octa-hedral coordination geometry. The two Ni atoms are bridged by two phenolate O atoms and the intra-molecular Ni?Ni distance is 3.0751?(9)?Å. The crystal structure is stabilized by O-H?Cl hydrogen bonds.

| S-EPMC2979620 | 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

Diaqua-bis-(dimethyl sulfoxide-?O)bis(saccharinato-?N)cobalt(II).

Project description:The title complex, [Co(C(7)H(4)NO(3)S)(2)(C(2)H(6)OS)(2)(H(2)O)(2)], contains a Co(2+) cation in an octa-hedral coordination environment. The metal atom is surrounded by two different neutral ligands, namely dimethyl-sulfoxide (DMSO) and water, each coordinating through the O atom. The anionic saccharinate (sac; 1,1,3-trioxo-2,3-dihydro-1?(6),2-benzothia-zol-2-ide) ligand coordinates through the N atom. Each of the three similar ligand pairs is in a trans configuration with respect to each other. The Co atom lies on a crystallographic center of symmetry and the octa-hedral geometry is not significantly distorted. A short O-H?O hydrogen bond is present between a water H atom and the ketone O atom; two longer hydrogen bonds (intra- and inter-molecular) are also present between a water H and a sulfonic O atom, forming a supramolecular assembly through head-to-tail aggregation between adjacent complexes.

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