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Tetra-ethyl-ammonium bromidotricarbon-yl(tropolonato)rhenate(I).

ABSTRACT: In the title salt, (C(8)H(20)N)[ReBr(C(7)H(5)O(2))(CO)(3)], the Re(I) atom is octa-hedrally surrounded by three facially orientated carbonyl ligands, one bidendate tropolonate ligand and a bromide ligand. The small O-Re-O bite angle of 74.88 (12)° leads to a distortion of the octa-hedral coordination sphere. The bromide ligand and the axial carbonyl ligand are substitutionally disordered over two positions in a 0.922 (3):0.078 (3) ratio. An array of C-H⋯O and C-H⋯Br hydrogen-bonding inter-actions between the cations and neighbouring rhenate anions stabilizes the crystal packing.

SUBMITTER: Schutte M

PROVIDER: S-EPMC3006975 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tetra-ethyl-ammonium dibromido-tricarbon-yl(o-toluidine)rhenate(I).

Project description:In the title compound, (C(8)H(20)N)[ReBr(2)(C(7)H(9)N)(CO)(3)], the Re(I) atom is octa-hedrally surrounded by three carbonyl ligands orientated in a facial arrangement, two bromide ligands and an o-toluidine ligand. The amine lies trans to the carbonyl ligand and is substitutionally disordered over two positions in a 0.66?(1):0.34?(1) ratio. An array of C-H?O, C-H?Br and N-H?Br hydrogen-bonding inter-actions between the cations and the surrounding rhenate anions stabilize the crystal structure.

| S-EPMC3050163 | biostudies-literature

Tetra-ethyl-ammonium (acetyl-acetonato)bromidotricarbonyl-rhenate(I).

Project description:In the title compound, (C(8)H(20)N)[ReBr(C(5)H(7)O(2))(CO)(3)], the Re(I) atom in the rhenate anion is surrounded by three carbonyl ligands orientated in a facial arrangement, a bromide ligand and an acetyl-acetonate ligand, leading to a distorted octa-hedral ReC(3)BrO(2) coordination with a O-Re-O bite angle of 85.66?(7)°. An array of C-H?O and C-H?Br hydrogen-bonding inter-actions between the cations and the surrounding rhenate anions stabilize the crystal structure.

| S-EPMC3050364 | biostudies-literature

Tetra-ethyl-ammonium tricarbonyl-chlorido(quinoxaline-2-carboxyl-ato-?N,O)rhenate(I).

Project description:In the title compound, (C(8)H(20)N)[Re(C(9)H(5)N(2)O(2))Cl(CO)(3)], the Re(I) atom is coordinated facially by three carbonyl groups, the bidentate quinoxaline-2-carbaldehyde ligand and a chloride atom, forming a distorted octahedral geometry.. The crystal packing is controlled by C-H?O hydrogen bonding and ?-? stacking inter-actions involving the benzene rings, with a centroid-centroid distance of 3.4220?(1)?Å.

| S-EPMC3007518 | biostudies-literature

Tetra-ethyl-ammonium tricarbonyl-chlorido-(pyrazine-2-carboxyl-ato-N,O)rhenate(I).

Project description:In the title complex, (C(8)H(20)N)[Re(C(5)H(3)N(2)O(2))Cl(CO)(3)], the Re(I) atom is coordinated facially by three carbonyl groups; the bidentate pyrazine-carboxyl-ato ligand and a chlorine atom complete the distorted octa-hedral coordination.

| S-EPMC2971389 | biostudies-other

Tris(tetra-ethyl-ammonium) hydrogen bis-[2-(sulfatosulfan-yl)benzoate].

Project description:The reaction between tetra-ethyl-ammonium hydroxide and 2,2'-dithio-benzoic acid yields the title compound, 3C(8)H(20)N·H(C(6)H(4)O(5)S(2))(2) (3-), the trianion of which comprises two 2-(sulfato-sulfan-yl)benzoate dianions linked across a center of inversion by an acid H atom. One of the cations is disordered about another center of inversion.

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Tetra-ethyl-ammonium bicarbonate trihydrate.

Project description:In the title compound, C(8)H(20)N(+)·CHO(3) (-)·3H(2)O, the bicarbon-ate anion, which has a small mean deviation from the plane of 0.0014?Å, fully utilises its three O and one H atom to form various O-H?O hydrogen bonds with the three water mol-ecules in the asymmetric unit, generating a hydrogen-bonded layer, which extends along (10[Formula: see text]). The tetra-ethyl-ammonium cations, as the guest species, are accommodated between every two neighboring layers, constructing a sandwich-like structure with an inter-layer distance of 7.28?Å.

| S-EPMC3213447 | biostudies-literature

Tetra-ethyl-ammonium l-tartarate dihydrate.

Project description:In the crystal structure of the title compound, C(8)H(20)N(+)·C(4)H(5)O(6) (-)·2H(2)O, the ions and water mol-ecules are linked via O-H?O and C-H?O hydrogen bonds, forming a two-dimensional network parallel to (001).

| S-EPMC2960025 | biostudies-literature

Ammonium tris-(tetra-ethyl-ammonium) hexa-cosa-oxidoocta-molybdate.

Project description:The structure of the title compound, NH(4)(C(8)H(20)N)(3)[Mo(8)O(26)], is built up by discrete cations and anions, with two formula units in the asymmetric unit. The ?-octa-molybdate anions are linked to the ammonium cations via N-H?O hydrogen bonding involving terminal oxide groups and to the tetra-ethyl-ammonium cations via weak C-H?O inter-actions.

| S-EPMC2960748 | biostudies-literature

A polymorph of tetra-ethyl-ammonium chloride.

Project description:The structure of the title compound, C(8)H(20)N(+)·Cl(-), is compared with a polymorph that was described earlier in the same space group. Differences in the conformations of the ethyl groups of the cation exist between the polymorphs. This study is given here in order to provide additional unit-cell data for use in qualitative identification of crystalline samples obtained in syntheses in which Et(4)N(+)·Cl(-) is either used or generated.

| S-EPMC2969402 | biostudies-literature

Tetra-ethyl-ammonium l-malate 1.36-hydrate.

Project description:The asymmetric unit of the title compound, C(8)H(20)N(+)·C(4)H(5)O(5) (-)·1.36H(2)O, contains two independent ion pairs, with similar conformations, and three water mol-ecules of crystallization, one water mol-ecule haing a site-occupancy factor of 0.721 (5). Intra-molecular O-H⋯O hydrogen bonds, involving the hydr-oxy groups and an O atom of each carboxyl-ate anion, generate five-membered rings involving S(5) ring motifs. In the crystal structure, mol-ecules are linked together by water mol-ecules through four-membered O-H⋯O-H⋯O-H inter-actions to form one-dimensional infinite chains along the a axis. Since the mol-ecules are also linked into one-dimensional infinite chains along the b axis, mol-ecular sheets parallel to the (001) plane are created. Overall, the crystal structure is stabilized by two intra-molecular O-H⋯O hydrogen bonds, nine inter-molecular O-H⋯O and ten C-H⋯O hydrogen bonds.

| S-EPMC2967964 | biostudies-literature

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