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Bis{μ4-N-[phen-yl(pyridin-2-yl-aza-nid-yl)meth-yl]pyridin-2-aminido}tetra-kis(tetra-hydro-furan)-tetra-lithium.

ABSTRACT: The title complex, [Li4(C17H14N4)2(C4H8O)4], bears a novel tetra-dentate di-amido ligand. In the tetra-nuclear centrosymmetric complex mol-ecule, the metal atoms exhibit two kinds of coordination modes. The middle two Li(+) cations are coord-inated by four N (ligand) and one O (tetra-hydro-furan, THF) atoms, resulting in a distorted square-pyramidal geometry. The outer two Li(+) cations are in distorted tetra-hedral environments consisting of three N (ligand) and one O (THF) atoms. The Li-N bond lengths vary from 2.020 (7) to 2.441 (6)Å.

SUBMITTER: Chen J

PROVIDER: S-EPMC3885009 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Chloridonitros-yl[meso-5,10,15,20-tetra-kis-(p-tol-yl)porphyrinato-κN,N',N'',N''']osmium(II) tetra-hydro-furan tetra-solvate.

Project description:The title compound, [OsCl(NO)(C(48)H(36)N(4))]·4C(4)H(8)O, is a six-coordinate osmium(II) porphyrin complex with nitrosyl (NO) and chloride (Cl) ligands trans to each other in an octa-hedral geometry. The metal complex lies on a fourfold rotation axis that passes through the Os, N, O and Cl atoms. The NO and Cl ligands are disordered in an 0.511 (12):0.486 (12) ratio.

| S-EPMC3051540 | biostudies-literature

Triphen-yl(tetra-hydro-furan)-aluminium(III).

Project description:In the title compound, [Al(C(6)H(5))(3)(C(4)H(8)O)], the Al atom has a distorted tetra-hedral geometry. The C-Al-C angles range from 113.25 (7) to 116.27 (8)°, much larger than the O-Al-C angles, which range from 103.39 (7) to 103.90 (6)°. The tetra-hydro-furan ring adopts an envelope conformation. The crystal packing is stabilized by C-H⋯π inter-actions.

| S-EPMC2959725 | biostudies-literature

Crystal structure of di-μ-tri-hydro-(penta-fluoro-phenyl)-borato-tetra-kis-(tetra-hydro-furan)-disodium.

Project description:The title compound, [Na(μ-C6F5BH3)(C4H8O)2]2, represents a dimeric structure of sodium and organoborohydride, located about a centre of inversion. The Na⋯B distances of 2.7845 (19) and 2.7494 (18) Å were apparently longer than the Li⋯B distances (2.403-2.537 Å) of the lithium organotri-hydro-borates in the previous reports. Moreover, an inter-action between the sodium atom and one fluorine atom on the 2-position of the benzene ring is observed [Na-F = 2.6373 (12) Å]. In the crystal, the dimeric mol-ecules are stacked along the b-axis via a π-π inter-action between the benzene rings.

| S-EPMC7001818 | biostudies-literature

Tetra-kis(μ-penta-fluoro-benzoato-κO:O')bis-[(tetra-hydro-furan-κO)molybdenum(II)].

Project description:In the asymmetric unit of the title compound, [Mo(2)(C(7)F(5)O(2))(4)(C(4)H(8)O)(2)], two independent half-mol-ecules are present, which are completed by a crystallographically imposed center of inversion between the individual Mo atoms. In each mol-ecule, four penta-fluoro-benzoate anions bridge the quadruply bonded Mo(2) (4+) unit that is, in addition, axially coordinated by two O atoms of tetra-hydro-furan (THF) mol-ecules. In the two independent mol-ecules, the mean Mo-Mo bond length is 2.110 Å. Since the THF mol-ecules are equally disordered over two sets of sites, there are four different Mo-O distances in both half-mol-ecules with an overall mean of 2.542 Å. A zigzag chain is formed by π-π stacking inter-actions between penta-fluoro-phenyl rings, indicated by a centroid-centroid distance of 3.7054 (11) Å and a centroid-to-plane distance of 3.4169 (3) Å. The extension of the unit gives a three-dimensional network structure with the THF mol-ecules located in the voids.

| S-EPMC3200930 | biostudies-literature

Bis(?-2-{bis-[(2-oxidobenzyl-idene)amino]-meth-yl}phenolato)bis-[(tetra-hydro-furan)-samarium(III)] tetra-hydro-furan disolvate.

Project description:In the centrosymmetric binuclear complex of the title solvate, [Sm(2)(C(21)H(15)N(2)O(3))(2)(C(4)H(8)O)(2)]·2C(4)H(8)O, the Sm(III) is coordin-ated in a distorted monocapped octa-hedral geometry by four O atoms and two N atoms from two tridentate deprotonated 2-{bis-[(2-oxidobenzyl-idene)amino]-meth-yl}phenolate ligands and an O atom of a tetra-hydro-furan (THF) mol-ecule. The Sm?Sm distance in the complex is 3.8057?(4)?Å. Parts of the coordinating THF mol-ecule are disordered over two sets of sites in a 0.56?(3):0.44?(3) ratio. The complex and solvent mol-ecules are linked into a three-dimensional structure via C-H?O hydrogen-bonding inter-actions.

| S-EPMC3344343 | biostudies-literature

Tris(tetra-hydro-furan-?O)tris-[tris-(thio-phen-2-yl)methano-lato-?O]terbium(III) tetra-hydro-furan monosolvate.

Project description:In the mononuclear title compound, [Tb(C(13)H(9)OS(3))(3)(C(4)H(8)O)(3)]·C(4)H(8)O, the lanthanide cation is located on a threefold rotation axis and is surrounded by electron-rich ligands in an approximately octa-hedral geometry. One of the thienyl groups and the bound THF are disordered with 0.5:0.5 occupancy. The free THF is disordered around the threefold axis.

| S-EPMC3238632 | biostudies-literature

([2.2.2]Cryptand)potassium (4-methyl-benzene-thiol-ato)[5,10,15,20-tetra-kis-(4-chloro-phen-yl)porphyr-inato]manganate(II) tetra-hydro-furan disolvate.

Project description:Single crystals of the title compound, [K(C18H36N2O6)][Mn(C44H24Cl4N4)(C7H7S)]·2C4H8O, were obtained by the solvent evaporation method. The MnII cation is coordinated by four pyrrole N atoms (Np) of the porphyrin ring and one S atom of the apical 4-methyl-benzene-thiol-ate ligand with the average Mn-Np and the apical Mn-S bond lengths being 2.160 (9) and 2.4642 (8) Å, respectively. Two tetra-hydro-furan solvent mol-ecules and a potassium cation chelated inside a [2.2.2]cryptand (4,7,13,16,21,24-hexa-oxa-1,10-di-aza-bicyclo[8.8.8]hexa-cosa-ne) are also present.

| S-EPMC9462021 | biostudies-literature

Dimethyl 3,3'-diphenyl-2,2'-[(S)-thio-phene-2,5-diylbis(carbonyl-aza-nedi-yl)]dipropano-ate tetra-hydro-furan monosolvate.

Project description:The title compound, C(26)H(26)N(2)O(6)S·C(4)H(8)O, a solvated bis-amide derivative, is also a chiral amino acid ester with l-phenyl-alanine methyl ester groups as amine substituents. The thio-phene-2,5-dicarboxamide core approximates C(2) point symmetry. The tetra-hydro-furan solvent mol-ecule is linked to the main mol-ecule through an inter-molecular N-H⋯O hydrogen bond. The central ring makes dihedral angles of 90.0 (2) and 76.5 (2)° with the pendant rings.

| S-EPMC2983431 | biostudies-literature

Crystal structure of tetra-kis-(tetra-hydro-furan-κO)bis-(tri-fluoro-methane-sulfonato-κO)iron(II).

Project description:The title compound, [Fe(CF3SO3)2(C4H8O)4], is octa-hedral with two tri-fluoro-methane-sulfonate ligands in trans positions and four tetra-hydro-furane mol-ecules in the equatorial plane. By the conformation of the ligands the complex is chiral in the crystal packing. The compound crystallizes in the Sohncke space group P212121 and is enanti-omerically pure. The packing of the mol-ecules is determined by weak C-H⋯O hydrogen bonds. The crystal studied was refined as a two-component inversion twin.

| S-EPMC6775732 | biostudies-literature

Diaqua-bis-(1,10-phenanthroline)nickel(II) tetra-kis-(cyanido-κC)nickelate(II) tetra-hydro-furan solvate monohydrate.

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

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