Bis[μ-3-(pyridin-2-yl)pyrazolato]bis[acetato(3,5-dimethyl-1H-pyrazole)nickel(II)]
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ABSTRACT:
SUBMITTER: Pilavadi T
PROVIDER: S-EPMC11375596 | biostudies-literature | 2024 Aug
REPOSITORIES: biostudies-literature
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Project description:The title dinuclear complex mol-ecule, [Cu2(C13H9N4)2(PF6)2], lies about an inversion center. The Cu(II) atom shows a square-pyramidal coordination geometry with the basal plane formed by four N atoms of the two bis-chelating 3,5-bis-(pyridin-2-yl)pyrazolate ions and with one F atom of the hexa-fluoro-phosphate ion in the apical position. Mol-ecules are stacked in a column along the a axis through C-H⋯F hydrogen bonds. The columns are further linked by other C-H⋯F hydrogen bonds, forming a three-dimensional network.
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Project description:The title dinuclear complex, [Fe2Br4(C13H9N4)2], which lies on an inversion center, features two approximately planar bis-(pyridin-2-yl)pyrazole (bpypz(-)) ligands [maximum deviation = 0.082 (3) Å] and four bromide ions. Each Fe(III) ion is octa-hedrally coordinated by four N atoms of two bpypz(-) ligands and two Br ions. π-π stacking inter-actions [centroid-centroid distances = 3.7004 (17)-4.0123 (18) Å] are observed between pyridyl and pyrazole rings, and between pyridyl and pyridyl rings of adjacent complex mol-ecules.
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Project description:In the title dinuclear complex, [Cu(2)(C(5)H(6)BrN(2))Cl(3)(C(5)H(7)BrN(2))(4)]·CH(3)CN, both Cu(II) ions are in slightly distorted square-pyramidal coordination geometries. The basal planes are defined by three N atoms from three 4-bromo-3,5-dimethyl-pyrazolate ligands, one of which is bridging, and one Cl ligand. A bridging Cl ligand forms the apical site for both Cu(II) ions. In the crystal, N-H⋯Cl hydrogen bonds connect complex mol-ecules into chains along [100]. Intra-molecular N-H⋯Cl hydrogen bonds are also observed.
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Project description:In the title compound, [Cu(C(2)H(3)O(2))(2)(C(5)H(8)N(2))(2)], the Cu(II) atom has a distorted tetra-gonal-bipyramidal geometry, with the equatorial plane formed by two N atoms belonging to two 3,5-dimethyl-1H-pyrazole ligands and two O atoms from two acetate anions. The second O atoms of the acetate groups provide elongated Cu-O axial contacts, so that the acetates appear to be coordinated in a pseudo-chelate fashion. The pyrazole ligands are situated in cis positions with respect to each other. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming a one-dimensional chain.
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Project description:The title compound, [Cu(2)(C(13)H(9)N(4))(2)(HSO(4))(2)]·2CH(3)OH, consists of discrete centrosymmetric dinuclear complex mol-ecules and methanol solvent mol-ecules. The Cu(II) atom shows a square-pyramidal coordination geometry and is bonded to four N atoms of the two bis-chelating 3,5-bis-(2-pyrid-yl)pyrazol-ate ions (bpypz(-)) and one O atom of the hydrogensulfate ion. The bpypz(-) ligands in the complex mol-ecule are virtually coplanar [dihedral angle between the mean ligand planes = 0.000(1)°] with the Cu(II) atom deviating in opposite directions from their best plane by 0.2080 (12) Å. π-π stacking inter-actions between the pyridyl and pyrazole rings [centroid-centroid distance = 3.391 (3) Å] and strong O-H⋯O hydrogen bonds between the hydrogensulfate ligands and the methanol mol-ecules assemble the mol-ecules into a one-dimensional polymeric structure extending along the a axis. The methanol mol-ecule acts both as an accepter and a donor in the hydrogen bonding.
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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).
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Project description:In the binuclear title compound, [Mo(2)(C(12)H(15)N(4)O(2))(2)Cl(2)O(3)]·H(2)O, the complex mol-ecules have approximate C(2) symmetry. Both Mo(V) atoms have a distorted octa-hedral coordination environment with cis-positioned terminal chloride and oxide groups. The heteroscorpionate organic ligand binds to the Mo(V) atom via an N(2)O donor set. The water mol-ecule bridges two complex mol-ecules, forming O-H⋯O and O-H⋯Cl hydrogen bonds to the acetate group and to the chloride ligands.
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Project description:The dinuclear centrosymmetric title compound, [Cu(2)(CH(3)CO(2))(4)(C(5)H(8)N(2))(2)], has a distorted square-pyramidal coordination geometry around each Cu(II) atom in which four O atoms from the bridging acetate ligands form the basal plane while two N atoms from the pyrazole ligands occupy the apical positions. The crystal has two half mol-ecules in the asymmetric unit with a Cu⋯Cu distance of 2.6762 (4) Å. Disorder was found for two O atoms and two C atoms of one acetate ligand and refined with occupancies of 0.265 (7) and 0.735 (7). The crystal also features mol-ecules linked through two N-H⋯O hydrogen bonds resulting in one-dimensional chains extending along the crystallographic b axis.
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Project description:The crystal structure of the title complex, [Zn(C(7)H(6)NO(2)S)(2)(H(2)O)](n), consists of extended layers parallel to (001) with 2-(pyridin-4-ylsulfan-yl)acetate ligands bridging the Zn(II) atoms. The Zn(II) atom shows a distorted penta-gonal-bipyramidal coordination environment. The Zn(II) and one O atom are situated on a crystallographic twofold rotation axis. In the crystal, intra-layer O-H⋯O hydrogen-bond inter-actions help to consolidate the coordination layer.
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Project description:In the title coordination polymer, {[Ni(C(19)H(17)N(4)O(2))(2)(H(2)O)(2)]·H(2)O}(n), the Ni(2+) cation is located on an inversion center and coordinated by two carboxyl-ate O atoms from two different 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anions, two O atoms from two coordinated water mol-ecules and two N atoms from two different 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anions, displaying a slightly distorted NiN(2)O(4) octa-hedral geometry. Each 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anion acts as a ?(2)-bridge, linking different nickel ions into a chain along [010]. In the crystal, adjacent chains are further linked through N-H?O, O-H?O, O-H?N and C-H?O hydrogen bonds into a three-dimensional network. The coordinated water mol-ecules and a disordered water mol-ecule of hydration with 0.50 site occupancy play an important role in the formation of these hydrogen-bonding inter-actions.
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