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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].

Project description:In the crystal structure of the polymeric title compound, [Mn(NCS)2(C10H8N2)] n , the Mn(II) cations are coordinated by one chelating 2,2'-bi-pyridine ligand and four thio-cyanate anions (two N- and two S-coordinating), forming a distorted [MnN4S2] octa-hedron. The asymmetric unit consists of one manganese cation located on a twofold rotation axis and half of a 2,2'-bi-pyridine ligand, the other half being generated by the same twofold rotation axis, as well as one thio-cyanate anion in a general position. The Mn(II) cations are linked by two pairs of ?1,3-bridging thio-cyanate ligands into chains along the c axis; because the N atoms of the 2,2'-bi-pyridine ligands, as well as the N and the S atoms of the thio-cyanate anions, are each cis-coordinating, these chains show a zigzag arrangement.

| S-EPMC4257407 | biostudies-literature

Poly[di-?(2)-acetato-diaquabis(2,2'-bi-pyridine)bis(?(3)-5-nitroisophthalato)tricobalt(II)].

Project description:The title complex, [Co(3)(C(8)H(3)NO(6))(2)(C(2)H(3)O(2))(2)(C(10)H(8)N(2))(2)(H(2)O)(2)], was synthesized under hydro-thermal conditions. The structure features a centrosymmetric complex with three Co(II) centres, one of which is located on a centre of inversion. The Co centres are coordinated in a distorted octa-hedral geometry. The bipyridine ligands are bonded to just one Co centre in a chelating mode, whereas the 5-nitro-isophthalate and acetate ions are bonded to two different Co atoms. The crystal structure is stabilized by O-H?O hydrogen bonds.

| S-EPMC2977571 | biostudies-literature

Crystal structure of bis-(2,2'-bi-pyridine-κ(2) N,N')bis-(thio-cyanato-κN)mang-anese(II) 2,2'-bi-pyridine monosolvate.

Project description:In the crystal structure of the mononuclear title compound, [Mn(NCS)2(C10H8N2)2]·C10H8N2, the Mn(II) cation is coordin-ated in an all-cis configuration by two N-bound thio-cyanate anions and two 2,2'-bi-pyridine ligands within a slightly distorted octa-hedral environment. The asymmetric unit consists of one Mn(II) cation, two thio-cyanate anions and two 2,2'-bi-pyridine ligands, as well as two non-coordinating 2,2'-bi-pyridine ligands that are each located on centres of inversion. In the crystal structure, the discrete [Mn(NCS)2(C10H8N2)2] complex mol-ecules are arranged in such a way that cavities are formed, in which the solvent 2,2'-bi-pyridine mol-ecules are located. Apart from van der Waals forces, there are no remarkable inter-molecular inter-actions present in the crystal structure.

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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.

Project description:The asymmetric unit of the title salt, [Co(C20H14N4S)(H2O)2](NO3)2, comprises a [Co(C20H14N4S)(H2O)2]2+ cation and two NO3- anions. In the complex, [Co(C20H14N4S)(H2O)2]2+ cation, the tetra-dentate 6,6'-sulfanediylbis(2,2'-bi-pyridine) ligand coordinates to the CoII cation in the equatorial positions, while two water mol-ecules occupy the axial positions, forming a compressed octa-hedral CoN4O2 coordination sphere. The NO3- anions are linked to the [Co(C20H14N4S)(H2O)2]2+ cations via O-H?O hydrogen bonds, yielding a layered arrangement parallel to (001).

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Tetra-aqua-(2,2'-bipyridine-κN,N')manganese(II) di-μ-aqua-bis-[aqua-(2,2'-bipyridine-κN,N')(5-sulfonatoisophthalato-κO)manganate(II)] tetra-hydrate.

Project description:The crystal structure of the title salt, [Mn(C(10)H(8)N(2))(H(2)O)(4)][Mn(2)(C(8)H(3)O(7)S)(2)(C(10)H(8)N(2))(2)(H(2)O)(4)]·4H(2)O, consists of mononuclear manganese(II) cations, dinuclear manganate(II) dianions and uncoordinated water mol-ecules. The dianion is located about an inversion center; the Mn(II) atom is coordinated by a 2,2'-bipyridine ligand, a sulfonatoisophthalate group, a water mol-ecule along with two bridging water mol-ecules in an octa-hedral geometry. The cation lies on a twofold rotation axis; the Mn(II) atom is coordinated by four water mol-ecules and a chelating 2,2'-bipyridine ligand in a distorted octa-hedral geometry. A partially overlapped arrangement between the bipyridine ligands and the aromatic ring of the sulfoisophthalate group of adjacent anions is observed; the distance (3.357 Å) indicates π-π stacking. Hydrogen bonds, with the water mol-ecules serving as hydrogen-bond donors, lead to a three-dimensional network architecture.

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2,2'-Biimidazolium hexa-aqua-manganese(II) bis-(sulfate).

Project description:The title compound, (C(6)H(8)N(4))[Mn(H(2)O)(6)](SO(4))(2), was obtained by cocrystallization of 2,2'-biimidazolium sulfate and bis-(tetra-butyl-ammonium) tetra-chlorido-manganate(II). The asymmetric unit contains one isolated (SO(4))(2-) anion, one half of an octa-hedral [Mn(H(2)O)(6)](2+) dication and one half of a 2,2'-biimidazolium dication, each of which lies on an inversion centre. Mol-ecules are connected by a three-dimensional N-H⋯O and O-H⋯O hydrogen-bond network.

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Di-?-acetato-?-aqua-bis-[acetatobis(1H-benzimidazole)cobalt(II)].

Project description:In the title compound, [Co(2)(C(2)H(3)O(2))(4)(C(7)H(6)N(2))(4)(H(2)O)], the half-mol-ecule in the asymmetric unit is completed by a crystallographic twofold rotation axis to give the full mol-ecule. The Co(II) ions are approximately octahedrally coordinated with a cis-N(2)O(4) coordination sphere. The compound features intra-molecular O-H?O hydrogen bonds between the non-bridging acetate groups and the bridging water mol-ecule, and inter-molecular N-H?O hydrogen bonds between the acetates and amine H atoms of the benzimidazoles which determine the mol-ecular packing in the crystal structure.

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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(?-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 ?-? 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.

| S-EPMC4908509 | biostudies-literature

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