scholarly journals Tris[triphenylantimony(V)]hexa(μ-oxido)tellurium(VI): a molecular complex with six Te—O—Sb bridges

Author(s):  
Kostiantyn V. Domasevitch ◽  
Ganna A. Senchyk

In the structure of the title compound [systematic name hexa-μ-oxido-1:2κ4 O:O;1:3κ4 O:O;1:4κ4 O:O-nonaphenyl-2κ3 C,3κ3 C,4κ3 C-triantimony(V)tellurium(VI)], [Sb3Te(C6H5)9O6], the hexaoxidotellurate(VI) ion is coordinated to three SbV ions via pairs of cis-positioned O atoms to form a discrete molecular unit. The TeVI and SbV central ions exhibit distorted octahedral [TeO6] and distorted trigonal–bipyramidal [SbC3O2] coordination geometries, respectively. The linking of these polyhedra, by sharing the dioxide edges, results in the Te-based octahedron having a mer-configuration. The packing of the molecules is dominated by C—H...O hydrogen bonding and weak dispersion forces, with a minor contribution from C—H...π bonds and π–π stacking interactions. According to the Hirshfeld surface analysis, the contributions of the H...H, H...C/C...H and H...O/O...H contacts are 58.0, 32.6 and 7.8%, respectively. The title structure provides a model for the bonding of triorganoantimony dications to octahedral oxoanions, and the observed doubly bridged motifs, Te(μ-O)2Sb, may find application in the functionalization of polyoxometalate species.

2006 ◽  
Vol 62 (4) ◽  
pp. m801-m803 ◽  
Author(s):  
Tong-Hua Bao ◽  
Zhen-Yu Hou

In the title complex, (C18H20N4)[HgI2(C7H3NO4)], the Hg atom exists in a distorted trigonal–bipyramidal geometry formed by two I atoms, one pyridine N and two carboxylate O atoms from a chelating 2,6-pyridinedicarboxylate ligand. Extensive hydrogen bonding between the carboxylate groups and the 1,1′-(butane-1,4-diyl)bis(1H-benzimidazol-3-ium) ion is present in the structure, as well as π–π stacking interactions. The cation has a crystallographic centre of symmetry. In the anion, a crystallographic twofold rotation axis coincides with the Hg–N bond.


2007 ◽  
Vol 63 (3) ◽  
pp. m826-m828 ◽  
Author(s):  
H. Zhong ◽  
X.-R. Zeng ◽  
X.-M. Yang ◽  
Q.-Y. Luo ◽  
S.-Z. Xiao

The CuI atom in the title complex, [CuCl(C12H8N2)2]·6H2O, exists in a distorted trigonal-bipyramidal coordination geometry defined by one Cl atom and four N atoms of two 1,10-phenanthroline ligands. In the crystal structure, molecules are linked into a three-dimensional framework by O—H...O hydrogen bonds and π–π stacking interactions. Four water molecules lie on crystallographic twofold rotation axes.


Author(s):  
Shabana Noor ◽  
Shintaro Suda ◽  
Tomoyuki Haraguchi ◽  
Fehmeeda Khatoon ◽  
Takashiro Akitsu

The compound, {6,6′-dimethoxy-2,2′-[(4-azaheptane-1,7-diyl)bis(nitrilomethanylidyne)]diphenolato}zinc(II) methanol monosolvate, [Zn(C22H27N3O4)]·CH3OH, at 298 K crystallizes in the orthorhombic space group Pna21. The Zn atom is coordinated by a pentadentate Schiff base ligand in a distorted trigonal–bipyramidal N3O2 geometry. The equatorial plane is formed by the two phenolic O and one amine N atom. The axial positions are occupied by two amine N atoms. The distorted bipyramidal geometry is also supported by the trigonality index (τ), which is found to be 0.85 for the molecule. In the crystal, methanol solvent molecule is connected to the complex molecule by an O—H...O hydrogen bond and the complex molecules are connected by weak supramolecular interactions, so achiral molecules generate a chiral crystal. The Hirshfeld surface analysis suggests that H...H contacts account for the largest percentage of all interactions.


Author(s):  
Rafaela Nita ◽  
Jeffrey R. Deschamps ◽  
Scott A. Trammell ◽  
D. Andrew Knight

The title compound, [CuCl2(C12H12N2)]n, was obtainedviaa DMSO-mediated dehydration of Cu(4,4′-dimethyl-2,2′-bipyridine)copper(II)·0.25H2O. The central CuIIatom is coordinated in a distorted trigonal–bipyramidal geometry by two N atoms of a chelating 4,4′-dimethyl-2,2′-bipyridine ligand [average Cu—N = 2.03 (3) Å] and three Cl atoms, one terminal with a short Cu—Cl bond of 2.2506 (10) Å, and two symmetry-equivalent and bridging bonds. The bridging Cl atom links the CuIIions into chains parallel to [001]viaone medium and one long Cu—Cl bond [2.3320 (10) and 2.5623 (9) Å]. The structure displays both inter- and intramolecular C—H...Cl hydrogen bonding.


IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Yosuke Tezuka ◽  
Kiyoshi Tsuge ◽  
Hideki Ohtsu

The coordination environment of the zinc(II) ion in the title complex, [ZnCl2(C22H14N4)], is distorted trigonal–bipyramidal comprised by three N atoms from the 2-([2,2′-bipyridin]-6-yl)benzo[b][1,5]naphthyridine ligand and two Cl−ions. In the crystal, neighbouring molecules are connected by π–π stacking interactions along thea-axis direction.


2014 ◽  
Vol 70 (7) ◽  
pp. i33-i33 ◽  
Author(s):  
Kewen Sun ◽  
Angela Möller

Dimanganese(II) hydroxide vanadate was obtained from hydrothermal reactions. The crystal structure of the title compound is isotypic with that of Zn2(OH)[VO4]. Three crystallographically independent Mn2+ions are present, one (site symmetry .m.) with a distorted trigonal-bipyramidal and two (site symmetries .m. and 1) with distorted octahedral coordination spheres. These polyhedra are linked through common edges, forming a corrugated layer-type of structure extending parallel to (100). A three-dimensional framework resultsviaadditional Mn—O—V—O—Mn connectivities involving the two different tetrahedral [VO4] units (each with point-group symmetry .m.). O—H...O hydrogen bonds (one bifurcated) between the OH functions (both with point-group symmetry .m.) and the [VO4] units complete this arrangement.


2007 ◽  
Vol 63 (3) ◽  
pp. m710-m711 ◽  
Author(s):  
Min Wang ◽  
Bo Hu ◽  
Xiao-Tao Deng ◽  
Cheng-Gang Wang

In the title dimeric complex, [Cu2(C2O4)Cl2(C12H8N2)2], which lies on a crystallographic inversion center, the CuII ion is in a distorted trigonal–bipyramidal coordination geometry formed by two N atoms from a phen ligand, two O atoms from a bridging oxalate ligand and one Cl atom. In the crystal structure, pairs of molecules related by π–π stacking interactions are stacked along the c-axis direction


2014 ◽  
Vol 70 (4) ◽  
pp. m147-m148 ◽  
Author(s):  
Halyna I. Buvailo ◽  
Julia A. Rusanova ◽  
Valeriya G. Makhankova ◽  
Vladimir N. Kokozay ◽  
Roman I. Zubatyuk

The title complex, [CuCl(C12H8N2)2][Mn(C7H3NO4)Cl(C12H8N2)]·CH3OH, consists of discrete [CuCl(phen)2]+cations (phen is 1,10-phenanthroline), [MnCl(pydc)(phen)]−anions (H2pydc is 2,6-pyridine-2,6-dicarboxylic acid) and one methanol solvent molecule of crystallization per asymmetric unit. It should be noted, that a solvent-masking procedure as implemented inOLEX2[Dolomanovet al.(2009).J. Appl. Cryst.42, 339–341] was used to remove the electronic contribution from one disordered solvent molecule, presumably methanol. Only the atoms used in the refined model are reported in chemical formula and related values. The CuIIion is five-coordinated by two phenanthroline ligands and one chloride ion in a distorted trigonal–bipyramidal geometry. The dihedral angle between the phen ligands is 65.21 (5)°. The MnIIion is six-coordinated by one Cl atom, two N atoms from a phen ligand, as well one N atom and two O atoms from pydc in a distorted octahedral coordination geometry, withcisangles ranging from 72.00 (8) to 122.07 (8)° andtransangles ranging from 143.98 (8) to 163.15 (6)°. In the crystal, C—H...O, O—H...O and C—H...Cl hydrogen bonds, cation–anion π–π interactions between the phen ring systems with centroid–centroid distances in the range 3.881 (34)–4.123 (36) Å, as well as cation–cation, anion–anion π–π interactions between the phen rings with centroid–centroid distances in the range 3.763 (4)–3.99 (5) Å and pydc rings with centroid–centroid distances 3.52 (5) Å link the various components.


2012 ◽  
Vol 68 (6) ◽  
pp. m842-m842 ◽  
Author(s):  
Mehmet Akkurt ◽  
Ali Akbar Khandar ◽  
Muhammad Nawaz Tahir ◽  
Seyed Abolfazl Hosseini Yazdi ◽  
Farhad Akbari Afkhami

The title compound, [CdBr2(C13H12N4O)], was obtained from the reaction of Cd(NO3)2·4H2O with methyl(pyridin-2-yl)methanone picolinoylhydrazone and sodium bromide. The Cd2+ cation is ligated by one O atom and two N atoms of the tridentate ligand and two bromide anions, forming a Br2CdN2O polyhedron with a distorted trigonal–bipyramidal coordination geometry. In the crystal, non-classical C—H...Br hydrogen bonds are observed. In addition, π–π stacking interactions [centroid–centroid distance = 3.7455 (19) Å] contribute to the stabilization of the crystal structure.


2015 ◽  
Vol 71 (8) ◽  
pp. 728-732
Author(s):  
Dong-Yan Wang ◽  
Xue-Li Hou ◽  
Xue-Nan Li

In order to search for new anionic architectures and develop useful organic–inorganic hybrid materials in halometallate systems, two new crystalline organic–inorganic hybrid compounds have been prepared,i.e. catena-poly[triethyl(2-hydroxyethyl)azanium [[bromidocadmate(II)]-di-μ-bromido]], {(C8H20NO)[CdBr3]}n, (1), andcatena-poly[triethyl(2-hydroxyethyl)azanium [[bromidomercurate(II)]-di-μ-bromido]], {(C8H20NO)[HgBr3]}n, (2), and the structures determined by X-ray diffraction analysis. The compounds are isostructural, crystallizing in the space groupP21/n. The metal centres are five-coordinated by bromide anions, giving a slightly distorted trigonal–bipyramidal geometry. The crystal structures consist of one-dimensional edge-sharing chains ofMBr5trigonal bipyramids, between which triethylcholine counter-cations are intercalated. O—H...Br hydrogen-bonding interactions are present between the cations and anions.


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