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Cyclo-Tetra-μ-fluorido-1:2κF;2:3κF;3:4κF;1:4κF-octa-nitrato-1κO,O';3κO,O'-tetra-kis-(1,10-phenanthroline)-2κN,N';4κN,N'-2,4-dichromium(III)-1,3-dineodymium(III) methanol tetra-solvate monohydrate.

ABSTRACT: In the title compound, [Cr(2)Nd(2)F(4)(NO(2))(8)(C(12)H(8)N(2))(4)]·4CH(3)OH·H(2)O, two cis-difluoridobis(1,10-phenanthroline)chromium(III) fragments containing octa-hedrally coordinated chromium(III) bridge via fluoride ions to two tetra-nitratoneodymate(III) fragments, forming an uncharged tetra-nuclear square-like core. The fluoride bridges are fairly linear, with Cr-F-Nd angles of 168.74 (8)°. Cr-F bond lengths are 1.8815 (15) Å, slightly elongated compared to those of the parent chromium(III) complex, which has bond lengths ranging from 1.8444 (10) to 1.8621 (10) Å. The tetra-nuclear complex is centered at a fourfold rotoinversion axis, with the Cr and Nd atoms situated on two perpendicular twofold rotation axes. The uncoordinated water mol-ecule resides on a fourfold rotation axis. The four methanol solvent mol-ecules are located around this axis, forming a cyclic hydrogen-bonded arrangement. The title compound is the first structurally characterized example of unsupported fluoride bridges between lanthanide and transition metal ions.

SUBMITTER: Birk T

PROVIDER: S-EPMC3246981 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Diaqua-1κO,3κO-di-μ-cyanido-1:2κN:C;2:3κC:N-dicyanido-2κC-bis-{4,4'-dibromo-2,2'-[propane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}-1κO,N,N',O';3κO,N,N',O'-1,3-di-iron(III)-2-nickel(II).

Project description:The title compound, [Fe(2)Ni(C(17)H(14)Br(2)N(2)O(2))(2)(CN)(4)(H(2)O)(2)] or [{Fe(C(17)H(14)Br(2)N(2)O(2))(H(2)O)}(2)(μ-CN)(2){Ni(CN)(2)}], is iso-structural with its Mn(III)-containing analogue. Each Fe(III) atom is chelated by a Schiff base ligand via two N and two O atoms and is additionally coordinated by a water mol-ecule, forming a slightly distorted octa-hedral geometry. The two Fe(III) centres are bridged by a square-planar Ni(CN)(4) unit, which lies on an inversion centre. A two-dimensional network is formed via O-H⋯O and O-H⋯N hydrogen bonds.

| S-EPMC2961845 | biostudies-literature

catena-poly[[[(2,2'-bipyridine-2κN,N')-μ-cyanido-1:2κN:C-cyanido-2κC-tris-(methanol-1κO)(nitrato-1κO,O')iron(II)yttrium(III)]-di-μ-cyanido-1:2'κN:C;2:1'κC:N] methanol solvate hemihydrate].

Project description:The title complex, {[Fe(II)Y(III)(CN)(4)(NO(3))(C(10)H(8)N(2))(CH(3)OH)(3)]·CH(3)OH·0.5H(2)O}(n), is built up of ladder-like chains oriented along the c axis. Each ladder consists of two strands based on alternating Fe(II) and Y(III) ions connected by cyanide bridges. Two such parallel chains are connected by additional cyanide anions (the 'rungs' of the ladder), which likewise connect Fe(II) and Y(III) ions, such that each [Fe(bipy)(CN)(4)](2-) (bipy is 2,2'-bipyridine) unit coordinates with three Y(III) ions and each Y(III) ion connects with three different [Fe(bipy)(CN)(4)](2-) units. The Fe(II) atom is six-coordinated in a distorted octa-hedral geometry and the Y(III) atom cation is eight-coordinated in a distorted dodeca-hedral environment. The uncoordinated methanol solvent mol-ecules are involved in hydrogen-bonding inter-actions with the one terminal cyanide group and a coordinated methanol mol-ecule from another [Y(III)(NO(3))(CH(3)OH)(3)](2+) unit. Adjacent ladder-like chains are also held together by hydrogen bonds between the terminal cyanide ligands of the [Fe(CN)(4)(bipy)](2-) units in one chain and the OH donors of CH(3)OH ligands from [Y(III)(NO(3))(CH(3)OH)(3)] units in neighboring chains. The water molecule exhibits half-occupation.

| S-EPMC3007586 | biostudies-literature

Barium bis-[tetra-fluorido-bromate(III)].

Project description:Single crystals of barium bis-[tetra-fluorido-bromate(III)], Ba[BrF4]2, were obtained in the form of tiny blocks. Crystal-structure refinement of Ba[BrF4]2 from single-crystal X-ray diffraction data confirmed the previous model obtained on the basis of powder data [Ivlev et al. (2014 ▸). Eur. J. Inorg. Chem. pp. 6261-6267], but with all atoms refined with anisotropic displacement parameters. The crystal structure consists of two symmetry-independent barium cations that are each coordinated by twelve fluorine atoms, forming edge-sharing polyhedra, and an almost square-planar [BrF4]- anion. The compound crystallizes in the Ba[AuF4]2 structure type.

| S-EPMC9462354 | biostudies-literature

Tetra-kis(μ-naphthalene-1-acetato-1:2κO:O')bis-(naphthalene-1-acetato)-1κO,O';2κO,O'-bis-(1,10-phenanthroline)-1κN,N';2κN,N'-europium(III)samarium(III).

Project description:In the title compound, [EuSm(C(12)H(9)O(2))(6)(C(12)H(8)N(2))(2)], the metal site is statistically occupied (50:50) by Eu and Sm atoms, forming a centrosymmetric complex. The metal site is nine-coordinate, in a distorted monocapped square-anti-prismatic coordination geometry. Mol-ecules are linked into three chains by C-H⋯π interactions and C-H⋯O hydrogen bonds. The combination of these chains generates a three-dimensional framework structure. One of the bridging naphthalene-1-ace-tate ligands was found to be disordered over two sites; the site occupancies for the naphthylmethyl group refined to 0.628 (14) and 0.372 (14).

| S-EPMC2959786 | biostudies-literature

Poly[[tetra-aqua-?(4)-fumarato-di-?(3)-fumarato-dineodymium(III)] trihydrate].

Project description:The title coordination polymer, {[Nd(2)(C(4)H(2)O(4))(3)(H(2)O)(4)]·3H(2)O}, was synthesized by the reaction of neodymium(III) nitrate hexa-hydrate with fumaric acid in a water-methanol (7:3) solution. The asymmetric unit comprises two Nd(3+) cations, three fumarate dianions (L(2-)), four aqua ligands and three uncoordinated water mol-ecules. The carboxyl-ate groups of the fumarate dianions exhibit different coordination modes. In one fumarate dianion, two carboxyl-ate groups chelate two Nd(3+) cations, while one of the O atoms is coordinated to another Nd(3+) cation. Another fumarate dianion bridges three Nd(3+) cations: one of the carboxyl-ate groups chelates one Nd(3+) cation, while the other carboxyl-ate group bridges two Nd(3+) cations in a monodentate mode. The third fumarate dianion bridges four Nd(3+) cations, where one of the carboxyl-ate groups chelates one Nd(3+) cation and coordinates in a monodentate mode to a second Nd(3+), while the second carboxyl-ate groups bridges two Nd(3+) cations in a monodentate mode and one O atom is coordinated to one Nd(3+) cation. The Nd(3+) cations are in a distorted tricapped-trigonal prismatic environment and coordinated by seven O atoms from the fumarate ligands and two O atoms from water mol-ecules. The Nd(3+) cations are linked by two carboxyl-ate O atoms and two carboxyl-ate groups, generating infinite Nd-O chains to form a three-dimensional framework. There are O-H?O and C-H?O hydrogen-bonding interactions between the coordin-ated and uncoordinated water mol-ecules and carboxyl-ate O atoms.

| S-EPMC3238635 | biostudies-literature

trans-Dichlorido(1,4,8,11-tetra-azacyclo-tetra-deca-ne)manganese(III) tetra-fluorido-borate.

Project description:In the title manganese(III) complex, [MnCl(2)(C(10)H(24)N(4))]BF(4) or trans-[MnCl(2)(cyclam)]BF(4) (cyclam is the tetra-dentate amine ligand 1,4,8,11-tetra-azacyclo-tetra-deca-ne), the Mn(III) ions occupy the center of a distorted octa-hedron coordinated by all four ligand nitro-gen donors in the macrobicyclic cavity and two chloride ions occupy the axial positions. Intra-molecular hydrogen bonding involving the coordinated chloride ions and the hydrogen atoms of the cyclam ligand is observed. Inter-molecular hydrogen bonding involving the tetrafluoridoborate anion and hydrogen atoms of the cyclam ligand leads to an infinite one-dimensional chain along the a axis. The tetra-fluoridoborate and inorganic units are linked by N-H?F hydrogen bonds. The structure may be compared with those of analogous compounds [MnCl(2)(cyclam)]ClO(4) and [Mn(CN)(2)(cyclam)]ClO(4).

| S-EPMC2983670 | biostudies-literature

catena-Poly[hexaaqua-1κO,2κO,3κO-(μ(4)-3,5-dicarboxylatopyrazol-1-ido-3':1:2:3κO:N,O:N,O:O)(μ(2)-3,5-dicarboxylatopyrazol-1-ido-1:2κN,O:N,O)-1,2-dicopper(II)-3-manganese(II)].

Project description:In the title compound, [Cu(2)Mn(C(5)HN(2)O(4))(2)(H(2)O)(6)](n), the Cu(II) ion is coordinated by two N atoms, two O atoms and one water O atom in a distorted square-pyramidal geometry. The Mn(II) ion is coordinated by two O atoms and four water O atoms in a distorted octa-hedral geometry. Two pyrazolyl-3,5-dicarboxyl-ate anions chelate to two copper ions, forming a dinuclear unit, which further connects the Mn(II )ions into chains extending along [100]. Both independent coordinated water mol-ecules on the Mn(II) ion are disordered in a 50:50 fashion.

| S-EPMC2983142 | biostudies-literature

{μ-2-[(Benzothia-zol-2-yl-2κN)hydrazonomethyl-2κN]-6-methoxy-phenolato-1:2κO,O:O}{2-[(benzo-thia-zol-2-yl-1κN)hydrazonomethyl-1κN]-6-methoxy-phenolato-1κO}(methanol-2κO)(nitrato-2κO)dicopper(II) nitrate.

Project description:The title complex, [Cu(2)(C(15)H(12)N(3)O(2)S)(2)(NO(3))(CH(3)OH)]NO(3), has two Cu(II) centres coordinated by two deprotonated 2-[(benzothia-zol-2-yl)hydrazonometh-yl]-6-methoxy-phenol ligands, a methanol mol-ecule and a nitrate ion. Both Cu(II) centres are penta-coordinated in a distorted square-pyramidal fashion. The crystal structure is stabilized by N-H⋯O and O-H⋯O hydrogen bonds.

| S-EPMC2969907 | biostudies-literature

{6,6'-Dimeth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato-1κO,O,O,O:2κO,N,N',O}(ethanol-1κO)-μ-nitrato-1:2κO:O'-dinitrato-1κO,O'-samarium(III)zinc(II).

Project description:In the title heteronuclear Zn(II)-Sm(III) complex, [SmZn(C(18)H(18)N(2)O(4))(NO(3))(3)(CH(3)CH(2)OH)], with the hexa-dentate Schiff base compartmental ligand N,N'-bis-(3-methoxy-salicyl-idene)ethyl-enediamine (H(2)L), the Sm(III) and Zn(II) ions are triply bridged by two phenolate O atoms from the Schiff base ligand and one nitrate anion. The five-coordinate Zn(II) ion is in a square-pyramidal geometry formed by the donor centers of two imine N atoms, two phenolate O atoms and one of the bridging nitrate O atoms. The Sm(III) center is in a ten-fold coordination of O atoms, involving the phenolate O atoms, two meth-oxy O atoms, one ethanol O atom, and two O atoms from two nitrate anions and one from the bridging nitrate anion. In the crystal, inter-molecular O-H⋯O and C-H⋯O inter-actions generate a layer structure extending parallel to (101).

| S-EPMC2970192 | biostudies-literature

Tetra-aqua-tetra-kis-(4,4'-bipyridine dioxide-?O)terbium(III) octa-cyanidotungstate(V).

Project description:In the title compound, [Tb(C(10)H(8)N(2)O(2))(4)(H(2)O)(4)][W(CN)(8)], both metal atoms are eight-coordinated. The Tb(III) ion displays a dodeca-hedral geometry, while the W(v) ion exhibits a distorted square-anti-prismatic geometry. The Tb atoms are located on a special position of site symmetry -4, whereas the W atoms are located on a twofold rotation axis. The cations are linked by O-H?O hydrogen bonds. The title compound is isotypic with the corresponding and previously described Mo compound [Qian & Yuan (2011 ?). Acta Cryst. E67, m845].

| S-EPMC3297244 | biostudies-literature

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