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Poly[[diaqua-tetra-kis-(μ(2)-benzene-1,4-di-carbonitrile-κN:N')iron(II)] bis-[tetra-chlorido-ferrate(III)] nitro-methane tetra-solvate].

ABSTRACT: In the title compound, {[Fe(II)(C(8)H(4)N(2))(2)(H(2)O)(2)][Fe(III)Cl(4)](2)·4CH(3)NO(2)}(n), the Fe(II) and Fe(III) ions are hexa- and tetra-coordinated, respectively. Each unique benzene-1,4-dicarbonitrile mol-ecule lies across a crystallographic inversion centre and bridges two Fe(II) ions (each situated on an inversion centre), generating two-dimensional (4,4) square grid layers. The tetra-chloridoferrate(III) anions and nitro-methane solvent mol-ecules lie between the square grid layers and are further link to the adjacent layers into a three-dimensional supra-molecular structure through O-H⋯Cl and O-H⋯O hydrogen bonds.

SUBMITTER: Prommon P

PROVIDER: S-EPMC3274928 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Pyridinium bis-(pyridine-κN)tetra-kis-(thio-cyanato-κN)ferrate(III).

Project description:In the title compound, (C5H6N)[Fe(NCS)4(C5H5N)2], the Fe(III) ion is coordinated by four thio-cyanate N atoms and two pyridine N atoms in a trans arrangement, forming an FeN6 polyhedron with a slightly distorted octa-hedral geometry. Charge balance is achieved by one pyridinium cation bound to the complex anion via N-H⋯S hydrogen bonding. The asymmetric unit consists of one Fe(III) cation, four thio-cyanate anions, two coordinated pyridine mol-ecules and one pyridinium cation. The structure exhibits π-π inter-actions between pyridine rings [centroid-centroid distances = 3.7267 (2), 3.7811 (2) and 3.8924 (2) Å]. The N atom and a neighboring C atom of the pyridinium cation are statistically disordered with an occupancy ratio of 0.58 (2):0.42 (2).

| S-EPMC3684869 | biostudies-literature

Tri-?-chlorido-bis-[(?-hexa-methyl-benzene)-ruthenium(II)] tetra-chlorido-ferrate(III).

Project description:The mol-ecular geometry of the complex cation in the title structure, [(?-Cl)(3){Ru(II)(?(6)-C(6)Me(6))}(2)][Fe(III)Cl(4)], compares very well with that reported earlier for the corresponding PF(6) (-) salt [Pandey et al. (1999 ?). J. Organomet. Chem.592, 278-282]. The [FeCl(4)](-) counter ion has a rather regular tetra-hedral geometry with Fe-Cl distances and Cl-Fe-Cl angles in the range 2.1891?(7)-2.2018?(8)?Å and 107.10?(3)-110.56?(3)°, respectively. There are no significant inter-molecular inter-actions in the crystal except for some weak C-H?Cl contacts, which in turn indicates that the crystal packing is determined predominantly by electrostatic inter-actions between the ionic constituents.

| S-EPMC3201229 | biostudies-literature

Poly[tetra-?-aqua-diaqua-tetra-kis-[?-(E)-2-nitro-cinnamato]tetra-rubidium].

Project description:In the structure of the title compound, [Rb(4)(C(9)H(6)NO(4))(4)(H(2)O)(6)](n), the asymmetric unit comprises four rubidium cations, two of which have an RbO(7) coordination polyhedron with a monocapped distorted octa-hedral stereochemistry and two of which have a distorted RbO(6) octa-hedral coordination. The bonding about both the seven-coordinate cations is similar, comprising one monodentate water mol-ecule together with three bridging water mol-ecules and three carboxyl-ate O-atom donors, two of which are bridging. The environments around the six-coordinate cations are also similar, comprising a monodentate nitro O-atom donor, a bridging water mol-ecule and four bridging carboxyl-ate O-atom donors [overall Rb-O range = 2.849?(2)-3.190?(2)?Å]. The coordination leads to a two-dimensional polymeric structure extending parallel to (001), which is stabilized by inter-layer water O-H?O hydrogen-bonding associations to water, carboxyl and nitro O-atom acceptors, together with weak inter-ring ?-? inter-actions [minimum ring centroid-centroid separation = 3.5319?(19)?Å].

| S-EPMC3247005 | biostudies-literature

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Project description:The porphyrin core of the title centrosymmetric compound, C44H26N8O8·2C6H5NO2, is approximately planar, the maximum deviation being 0.069?(3)?Å. The planes of the benzene rings of the nitro-phenyl substituents are almost perpendicular to the porphyrin mean plane, making dihedral angles of 73.89?(9) and 89.24?(9)°. The two pyrrole ring H atoms are equally disordered over the four pyrrole ring N atoms. In the crystal, weak C-H?O and C-H?N hydrogen bonds link the porphyrin mol-ecules into a three-dimensional supra-molecular network. The nitro-benzene solvent mol-ecules are linked by weak C-H?O hydrogen bonds into supra-molecular chains propagating along the a-axis direction.

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Project description:The title complex, [Ni(C(12)H(8)N(2))(2)(H(2)O)(2)][Ni(CN)(4)]·C(4)H(8)O·H(2)O, consists of a cationic [Ni(C(12)H(8)N(2))(2)(H(2)O)(2)](2+) unit, an anionic [Ni(CN)(4)](2-) unit, one uncoordinated water and one tetra-hydro-furan mol-ecule. In the cationic unit, the Ni(2+) atom is coordinated by four N atoms and two O atoms from two 1,10-phenanthroline ligands and two water mol-ecules in a distorted octa-hedral coordination environment. In the anionic unit, the Ni(2+) atom is in a square-planar coordination by four C atoms from four monodentate terminal cyanide ligands. O-H⋯N and O-H⋯O hydrogen bonds link neighboring cationic and anionic units, forming a three-dimensional supra-molecular network. The inter-stitial tetra-hydro-furan mol-ecule is independently disordered over two sites in a 1:1 ratio.

| S-EPMC2983352 | biostudies-literature

Poly[?(2)-aqua-diaqua-(?(8)-3-nitro-benzene-1,2-dicarboxylato)(?(6)-3-nitro-benzene-1,2-dicarboxylato)tetra-sodium].

Project description:In the title layered coordination polymer, [Na(4)(C(8)H(3)NO(6))(2)(H(2)O)(3)](n), the doubly deprotonated 3-nitro-benzene-1,2-dicarboxyl-ate ligands exhibit ?(8)- and ?(6)-coordination modes to the sodium ions, generating sheets lying parallel to (001). The coordination environments of the sodium ions are distorted octa-hedral, distorted trigonal-bipyramidal and moncapped trigonal-prismatic. One of the nitro groups is disordered over two sets of sites with site-occupancy factors 0.580?(8):0.419?(2). A network of O-H?O and O-H?N hydrogen bonds helps to establish the packing.

| S-EPMC3011426 | biostudies-literature

Butyl-triethyl-ammonium tetra-chlorido-ferrate(III).

Project description:In the title compound, (C(10)H(24)N)[FeCl(4)], no classical hydrogen bonds are observed. The butyl-triethyl-ammonium cations inter-act with the tetra-hedral [FeCl(4)](-) anion through weak C-H?Cl inter-actions, forming a three-dimensional network.

| S-EPMC3344376 | biostudies-literature

Tetra-butyl-ammonium tetra-kis-(trimethyl-silanolato-κO)ferrate(III).

Project description:In the title salt, (C(16)H(36)N)[Fe(C(3)H(9)OSi)(4)], the cation contains a central N atom bonded to four n-butyl alkyl groups in a tetra-hedral arrangement, while the anion contains a central Fe(III) atom tetra-hedrally coordinated by four trimethyl-silanolate ligands.

| S-EPMC3435606 | biostudies-literature

Poly[diaqua-penta-kis(?(4)-benzene-1,2-dicarboxyl-ato)(?(3)-benzene-1,2-dicarboxyl-ato)tetra-thulium(III)].

Project description:The title compound, [Tm(4)(C(8)H(4)O(4))(6)(H(2)O)(2)](n), has been synthesized hydro-thermally. The asymmetric unit has four unique Tm(III) ions that are six-, seven-, eight- and nine-coordinate. The cations are inter-connected by bridging benzene-1,2-dicarboxyl-ate (BDC) anions to form an infinite two-dimensional framework, in which the BDC ligands adopt three different coordination modes. Adjacent sheets are further packed to form a three-dimensional supra-molecular framework through O-H?O hydrogen bonds.

| S-EPMC2960755 | biostudies-literature

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