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Di-?(2)-bromido-bis-[bromido(?-1,2,4,5-tetra-methyl-benzene)ruthenium(II)].

ABSTRACT: The asymmetric unit of the title compound, [Ru(2)Br(4)(C(10)H(14))(2)], contains one half of the centrosymmetric mol-ecule. Each Ru center is coordinated by tetra-methyl-benzene ring in a ?(6)-coordination mode, and one terminal and two bridging bromine atoms. The aromatic rings and the Ru(2)Br(2) four-membered ring form a dihedral angle of 55.99?(8)°. In the crystal structure, weak inter-molecular C-H?Br inter-actions link mol-ecules into chains propagated in [001].

SUBMITTER: Espinosa-Jalapa N

PROVIDER: S-EPMC2972084 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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Di-μ(2)-bromido-bis-[bromido(η-1,2,4,5-tetra-methyl-benzene)ruthenium(II)].

Espinosa-Jalapa Noel N Hernández-Ortega Simón S Le Lagadec Ronan R Morales-Morales David D

Acta crystallographica. Section E, Structure reports online 20091128 Pt 12

The asymmetric unit of the title compound, [Ru(2)Br(4)(C(10)H(14))(2)], contains one half of the centrosymmetric mol-ecule. Each Ru center is coordinated by tetra-methyl-benzene ring in a η(6)-coordination mode, and one terminal and two bridging bromine atoms. The aromatic rings and the Ru(2)Br(2) four-membered ring form a dihedral angle of 55.99 (8)°. In the crystal structure, weak inter-molecular C-H⋯Br inter-actions link mol-ecules into chains propagated in [001]. ...[more]

PMID: 21578690

Similar Datasets

Di-?(2)-chlorido-bis-[chlorido(?-hexa-methyl-benzene)ruthenium(II)].

Project description:Dimeric mol-ecules of the title compound, [Ru(2)Cl(4)(C(12)H(18))(2)], are located on a crystallographic centre of inversion with one mol-ecule in the asymmetric unit. The hexa-methyl-benzene rings are in an ?(6)-coordination to the ruthenium centres, which are bridged by two chloride ligands. In addition, the ruthenium centres are bonded to another chloride ligand. The aromatic rings and the Ru(2)Cl(2) four-membered ring enclose a dihedral angle of 55.85?(6)°.

| S-EPMC2971002 | 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

Bis(tetra-methyl-amonium) bis-(2,4,5-carboxy-benzoate)-benzene-1,2,4,5-tetra-carboxylic acid (1/1).

Project description:The asymmetric unit of the title compound, 2C(4)H(12)N(+)·2C(10)H(5)O(8) (-)·C(10)H(6)O(8), consists of a tetra-methyl-amonium cation, an anion derived from the singly deprotonated pyromellitic acid anion, 2,4,5-carboxy-benzoate (H(3)bta(-)), and one-half of a benzene-1,2,4,5-tetra-carboxylic acid (H(4)bta) mol-ecule, which has the centroid of the aromatic ring positioned at a crystallographic centre of inversion. The H(4)bta and H(3)bta(-) residues are involved in an extensive inter-molecular O-H⋯O hydrogen-bonding network, which leads to a three-dimensional supra-molecular structure containing one-dimensional channels running parallel to the [001] crystallographic direction. These channels house the tetra-methyl-amonium cations.

| S-EPMC2915027 | biostudies-literature

Bis(3-methyl-pyridinium) tetra-(chlorido/bromido)cuprate(II).

Project description:The structure of the title salt, (C(6)H(8)N)(2)[CuCl(3.4)Br(0.6)], consists of two 3-methyl-pyridinium cations and a distorted tetra-hedral [CuCl(3.4)Br(0.6)](2-) dianion. Substitutional disorder with Br is exhibited for three of the Cl atoms of the anion, giving a mixed chloride/bromide cuprate(II) anion. In the crystal, inter-molecular N-H?Cl hydrogen bonds link two cations to one anion, forming a three-ion aggregate. These are connected into a supra-molecular chain along the b axis via ?-? inter-actions between the pyridinium rings [centroid-centroid distance = 3.743?(3)?Å].

| S-EPMC3120388 | biostudies-literature

Bis-(2-amino-6-methyl-pyridinium) tetra-bromido-cuprate(II).

Project description:In the crystal structure of the title compound, (C(6)H(9)N(2))(2)[CuBr(4)], the geometry around the Cu atom is inter-mediate between tetra-hedral (T(d)) and square planar (D(4h)). Each [CuBr(4)](2-) anion is connected non-symmetrically to four surrounding cations through N-H?X (pyridine and amine proton) hydrogen bonds, forming chains of the ladder-type running parallel to the crystallographic b axis. These layers are further connected by means of offset face-to-face inter-actions (parallel to the a axis), giving a three-dimensional network. Cation ?-? stacking [centroid separations of 3.69?(9) and 3.71?(1)?Å] and Br?aryl inter-actions [3.72?(2) and 4.04?(6)?Å] are present in the crystal structure. There are no inter-molecular Br?Br inter-actions.

| S-EPMC2961314 | biostudies-literature

catena-Poly[bis-(4-amino-pyridinium) [[tetra-aqua-nickel(II)]-?-benzene-1,2,4,5-tetra-carboxyl-ato] dihydrate].

Project description:The asymmetric unit of the title compound, {(C(5)H(7)N(2))(2)[Ni(C(10)H(2)O(8))(H(2)O)(4)]·2H(2)O}(n), contains an Ni(II) atom, two water mol-ecules of coordination, one half of a benzene-1,2,4,5-tetra-carboxyl-ate (btec) anionic ligand, one 4-amino-pyridinium cation (papy) and an uncoordinated water mol-ecule. The metal center lies on an inversion center and adopts an octa-hedral geometry with the carboxyl-ate groups tilted out of the mean plane formed by the btec. In the crystal, mol-ecules are linked into one-dimensional coordination polymers running along the ac diagonal. The crystal structure is consolidated by N-H?O and O-H?O hydrogen bonds.

| S-EPMC2970276 | biostudies-literature

Poly[bis(phenethyl-ammonium) [di-bromido-plumbate(II)]-di-μ-bromido]].

Project description:Crystals of the title compound, {(C(6)H(5)C(2)H(4)NH(3))(2)[PbBr(4)]}(n), were grown at room temperature from a solution in N,N-dimethyl-formamide (DMF) using nitro-methane as the poor solvent. This perovskite-type organic-inorganic hybrid compound consists of well ordered sheets of corner-sharing disordered PbBr(6) octa-hedra separated by bilayers of phenethyl-ammonium cations. The octa-hedra are rotated and tilted due to N-H⋯Br hydrogen bonds with the ammonium groups, generating a superstructure in the unit cell similar to that of the tetra-chloridoplumbate (C(6)H(5)C(2)H(4)NH(3))(2)[PbCl(4)].

| S-EPMC2970995 | biostudies-literature

Bis(piperazinediium) benzene-1,2,4,5-tetra-carboxyl-ate hexa-hydrate.

Project description:The title compound, 2C(4)H(12)N(2) (2+)·C(10)H(2)O(8) (4-)·6H(2)O or (pipzH(2))(2)(btc)·6H(2)O, was formed from the reaction between benzene-1,2,4,5-tetra-carboxylic acid (btcH(4)) as a proton donor and piperazine (pipz) as a proton acceptor. A variety of O-H?O, N-H?O and C-H?O hydrogen bonds, as well as C-H?? inter-actions, are present in the crystal structure. Two water O atoms are each disordered over two positions; for both the site occupany factors are ca 0.66 and 0.34.

| S-EPMC2960987 | biostudies-literature

Poly[(?(6)-benzene-1,2,4,5-tetra-carboxyl-ato)bis-(1,10-phenanthroline-?N,N')dimanganese(II)].

Project description:The title polymeric compound, [Mn(2)(C(10)H(2)O(8))(C(12)H(8)N(2))(2)](n), was obtained by the reaction of manganese(II) chloride tetra-hydrate with benzene-1,2,4,5-tetra-carboxylic acid (H(4)bta) in aqueous solution. Each Mn(2+) ion is coordinated in a distorted octa-hedral geometry by two N atoms from one 1,10-phenanthroline ligand and four O atoms [Mn-O = 2.116?(2)-2.237?(2)?Å] from three bta(4-) ligands, which also act as bridging groups between the Mn(2+) ions.

| S-EPMC2961681 | biostudies-literature

Bis(1-methyl-piperazine-1,4-diium) di-?-bromido-bis-[tetra-bromido-bismuthate(III)] dihydrate.

Project description:In the title hydrated salt, (C5H14N2)2[Bi2Br10]·2H2O, the com-plete [Bi2Br10](4-) biocta-hedron is generated by crystallographic inversion symmetry. The diprotonated piperazine ring adopts a chair conformation, with the methyl group occupying an equatorial position. In the crystal, the tetra-anions and water mol-ecules are linked by O-H?Br and O-H?(Br,Br) hydrogen bonds to generate [100] chains. The chains are crosslinked by N-H?Br, N-H?O and C-H?Br hydrogen bonds originating from the piperazinediium dications, thereby forming a three-dimensional network.

| S-EPMC4051086 | biostudies-other

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