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Crystal structure of bis-(acetato-?O)di-aqua-(2,2'-bi-pyridine-?(2) N,N')manganese(II).

ABSTRACT: In the title monomeric manganese(II) complex, [Mn(CH3COO)2(C10H8N2)(H2O)2], the metal ion is coordinated by a bidentate 2,2'-bi-pyridine (bpy) ligand, two water mol-ecules and two axial acetate anions, resulting in a highly distorted octa-hedral environment. The aqua ligands are stabilized by the formation of strong intra-molecular hydrogen bonds with the uncoordinated acetate O atoms, giving rise to pseudo-bridging arrangement of the terminal acetate groups. In the crystal, the mol-ecules form [010] zigzag chains via O-H?O hydrogen bonds involving the aqua ligands and acetate O atoms. Further, the water and bpy ligands are trans to each other, and are arranged in an off-set fashion showing inter-molecular ?-? stacking between nearly parallel bi-py rings, the centroid-centroid separations being 3.8147?(12) and 3.9305?(13)?Å.

SUBMITTER: Saravanan N

PROVIDER: S-EPMC4186102 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature

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Crystal structure of bis-(acetato-κO)di-aqua-(2,2'-bi-pyridine-κ(2) N,N')manganese(II).

Saravanan Natarajan N Selvam Parasuraman P

Acta crystallographica. Section E, Structure reports online 20140813 Pt 9

In the title monomeric manganese(II) complex, [Mn(CH3COO)2(C10H8N2)(H2O)2], the metal ion is coordinated by a bidentate 2,2'-bi-pyridine (bpy) ligand, two water mol-ecules and two axial acetate anions, resulting in a highly distorted octa-hedral environment. The aqua ligands are stabilized by the formation of strong intra-molecular hydrogen bonds with the uncoordinated acetate O atoms, giving rise to pseudo-bridging arrangement of the terminal acetate groups. In the crystal, the mol-ecules form ...[more]

PMID: 25309183

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Crystal structure of poly[[(2,2'-bi-pyridine)manganese(II)]-di-?-thio-cyanato].

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A compressed octa-hedral cobalt(II) complex in the crystal structure of di-aqua-[6,6'-sulfanediylbis(2,2'-bi-pyridine)]cobalt(II) dinitrate.

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Crystal structure of bis-(2,2'-bi-pyridine)[N'-(quino-lin-2-ylmethylidene)pyridine-2-carbohydrazide]ruthenium(II) bis(tetra-fluorido-borate) di-chloro-methane tris-olvate.

Project description:The title compound, [Ru(C10H8N2)2(C16H12N4O)](BF4)2·3CH2Cl2, crystallizes with one complex dication, two BF4 (-) counter-anions and three di-chloro-methane solvent mol-ecules in the asymmetric unit. The central Ru(II) atom adopts a distorted octa-hedral coordination sphere with two 2,2'-bi-pyridine (bpy) and one quinoline-2-carbaldehyde (pyridine-2-carbon-yl)hydrazone (HL) ligand. The hydrazone ligand has a Z form and coordinates to the Ru(II) atom via the amide-O and imine-N atoms, affording a planar five-membered chelate ring, while its pyridine-N and quinoline-N donor atoms in the substituents are non-coordinating. The hydrazone N-H group forms an intra-molecular hydrogen bond with the quinoline-N atom. In the crystal, the quinoline moiety of HL shows the shortest ?-? stacking inter-action with the pyridine substituent of HL in a neighbouring complex, the centroid-to-centroid distance being 3.793?(3)?Å.

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Bis(μ-carboxyl-atoethyl-phospho-nato)bis-[aqua-(2,2'-bipyridine)manganese(II)].

Project description:The title compound, [Mn(2)(HO(3)PCH(2)CH(2)COO)(2)(C(8)H(8)N(2))(2)(H(2)O)(2)], was obtained by hydro-thermal synthesis. The manganese(II) ions are six-coordinate and are linked by two 2-carboxy-ethyl-phospho-nate ligands, forming a centrosymmetric dimer. The Mn ions adopts a distorted octahedral coordination geometry. The dimers are further linked by O-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distance 4.2754 (4) Å].

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Crystal structure of trans-di-aqua-bis-(nicotinamide-?N (1))bis-(4-nitro-benzoato-?O)manganese(II).

Project description:The asymmetric unit of the title compound, [Mn(C7H4NO4)2(C6H6N2O)2(H2O)2], contains one Mn(II) atom, one 4-nitro-benzoate (NB) anion, one nicotinamide (NA) ligand and one water mol-ecule; NA and NB each act as a monodentate ligand. The Mn(II) atom, lying on an inversion centre, is coordinated by four O atoms and two pyridine N atoms in a distorted octa-hedral geometry. The water mol-ecules are hydrogen bonded to the carboxyl-ate O atoms. The dihedral angle between the carboxyl-ate group and the adjacent benzene ring is 24.4?(3)°, while the benzene and pyridine rings are oriented at a dihedral angle of 86.63?(11)°. In the crystal, O-H?O and N-H?O hydrogen bonds link the mol-ecules, forming a layer parallel to the ab plane. The layers are further linked via weak C-H?O hydrogen bonds, a ?-? stacking inter-action [centroid-centroid distance = 3.868?(2)?Å] and a weak C-H?? inter-action, resulting in a three-dimensional network.

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