scholarly journals Bis[μ-2-(2H-benzotriazol-2-yl)-4-methylphenolato]bis[dimethylaluminium(III)]

2009 ◽  
Vol 65 (6) ◽  
pp. m670-m670 ◽  
Author(s):  
Chen-Yu Li ◽  
Chia-Her Lin ◽  
Bao-Tsan Ko
Keyword(s):  
Title Complex ◽  
Methyl Groups ◽  
Asymmetric Unit ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The title complex, [Al2(CH3)4(C13H10N3O)2], is dimeric, bridged through the O atoms of the phenolate anions. The asymmetric unit contains one half of the molecule and there is a crystallographic inversion centre in this molecule. Each Al atom is pentacoordinated by one N atom and two bridging O atoms of twoN,O-bidentate benzotriazolylphenolate ligands and by two C atoms from two methyl groups, forming a distorted trigonal–bipyramidal environment.

[3-Methoxy-2-oxidobenzaldehyde (2-thienylcarbonyl)hydrazonato]dimethyltin(IV)

2006 ◽  
Vol 62 (5) ◽  
pp. m1024-m1026
Author(s):  
Shao-Wen Chen ◽  
Han-Dong Yin
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Complex ◽  
Asymmetric Unit ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

In the molecule of the title complex, [Sn(CH3)2(C13H10N2O3S)], the Sn atom is in a distorted trigonal–bipyramidal geometry. There are two molecules in the asymmetric unit. A centrosymmetric arrangement leads to an Sn2O2 core through weak Sn...O interactions and causes the formation of a dimer. Intermolecular C—H...O hydrogen bonds seem to be effective in the stabilization of the crystal structure.

scholarly journals Crystal structure of chloridobis[(1,2,5,6-η)-cycloocta-1,5-diene]iridium(I)

2017 ◽  
Vol 73 (2) ◽  
pp. 273-277 ◽  
Author(s):  
A. K. Fazlur Rahman ◽  
Miles Wilklow-Marnell ◽  
William W. Brennessel ◽  
William D. Jones
Keyword(s):  
Title Complex ◽  
Asymmetric Unit ◽  
Large Excess ◽  
Orthorhombic Space Group ◽  
Slow Cooling ◽  
Hexagonal Packing ◽  
Trigonal Bipyramidal ◽  
Chloride Ligand ◽  
Packing Arrangement ◽  
Coordinate Geometry

The title complex, [IrCl(C8H12)2], was synthesized directly from the reaction of IrCl3·3H2O with a large excess of cod (cod = cycloocta-1,5-diene) in alcoholic solvent. Large yellow needles were obtained by the slow cooling of a hot solution. Based on the positions of the chloride ligand and the mid-points of the four C=C bonds, the molecule adopts a five-coordinate geometry that is midway between square pyramidal and trigonal bipyramidal. The material crystallizes in the orthorhombic space groupPbcawith one molecule per asymmetric unit in a general position and shows no significant intermolecular interactions. Individual molecules are aligned along [010], and these rows form a pseudo-hexagonal packing arrangement.

scholarly journals Crystal structure refinement of magnesium zinc divanadate, MgZnV2O7, from powder X-ray diffraction data

2021 ◽  
Vol 77 (6) ◽  
pp. 588-591
Author(s):  
Stephanie J. Hong ◽  
Jun Li ◽  
Mas A. Subramanian
Keyword(s):  
Crystal Structure ◽  
Diffraction Data ◽  
Structure Refinement ◽  
Atomic Ratio ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Wyckoff Position ◽  
Distorted Trigonal Bipyramidal

The crystal structure of magnesium zinc divanadate, MgZnV2O7, was determined and refined from laboratory X-ray powder diffraction data. The title compound was synthesized by a solid-state reaction at 1023 K in air. The crystal structure is isotypic with Mn0.6Zn1.4V2O7 (C2/m; Z = 6) and is related to the crystal structure of thortveitite. The asymmetric unit contains two metal sites with statistically distributed magnesium and zinc atoms with the atomic ratio close to 1:1. One (Mg/Zn) metal site (M1) is located on Wyckoff position 8j and the other (M2) on 4h. Three V sites (all on 4i), and eight O (three 8j, four 4i, and one 2b) sites complete the asymmetric unit. The structure is an alternate stacking of V2O7 layers and (Mg/Zn) atom layers along [20\overline{1}]. It is distinct from other related structures in that each V2O7 layer consists of two groups: a V2O7 dimer and a V4O14 tetramer. Mixed-occupied M1 and M2 are coordinated by oxygen atoms in distorted trigonal bipyramidal and octahedral sites, respectively.

scholarly journals Tetra-μ3-iodido-tetrakis[(tri-n-butylphosphane-κP)copper(I)]

2014 ◽  
Vol 70 (4) ◽  
pp. m117-m118
Author(s):  
Simon Klenk ◽  
Wolfgang Frey ◽  
Martina Bubrin ◽  
Sabine Laschat
Keyword(s):  
Site Symmetry ◽  
Asymmetric Unit ◽  
Tetrahedral Geometry ◽  
Trigonal Bipyramidal ◽  
The Face ◽  
Symmetry Operators ◽  
Anisotropic Displacement Parameters ◽  
Axial Site ◽  
Geometric Consequence ◽  
Distorted Trigonal Bipyramidal

The title complex, [Cu4I4(C12H27P)4], crystallizes with six molecules in the unit cell and with three independent one-third molecule fragments, completed by application of the relevant symmetry operators, in the asymmetric unit. The tetranuclear copper core shows a tetrahedral geometry (site symmetry 3..). The I atoms also form a tetrahedron, with I...I distances of 4.471 (1) Å. Both tetrahedra show an orientation similar to that of a pair of self-dual platonic bodies. The edges of the I-tetrahedral structure are capped to the face centers of the Cu-tetrahedron andvice versa. The Cuface...I distances are 2.18 Å (averaged) and the Iface...Cu distances are 0.78 Å (averaged). As a geometric consequence of these properties there are eight distorted trigonal–bipyramidal polyhedra evident, wherein each trigonal face builds up the equatorial site and the opposite Cu...I positions form the axial site. As expected, then-butyl moieties are highly flexible, resulting in large elongations of their anisotropic displacement parameters. Some C atoms of then-butyl groups were needed to fix alternative discrete disordered positions.

[4-(Dimethylamino)pyridine-κN]bis(pentane-2,4-dionato-κ2 O,O′)copper(II)

2006 ◽  
Vol 62 (5) ◽  
pp. m1142-m1143 ◽  
Author(s):  
Leonard F. Lindoy ◽  
John C. McMurtrie ◽  
David Schilter
Keyword(s):  
Title Complex ◽  
Twofold Axis ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The title complex, [Cu(C5H7O2)2(C7H10N2)], is disposed about a twofold axis and forms a discrete molecule with the metal adopting a distorted trigonal–bipyramidal geometry within an NO4 donor set.

scholarly journals Crystal structure of tricarbonyl(N-diphenylphosphanyl-N,N′-diisopropyl-P-phenylphosphonous diamide-κ2P,P′)cobalt(I) tetracarbonylcobaltate(−I) toluene 0.25-solvate

2014 ◽  
Vol 70 (12) ◽  
pp. 533-535
Author(s):  
Laura Dura ◽  
Anke Spannenberg ◽  
Torsten Beweries
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
Structural Element ◽  
Trigonal Bipyramidal ◽  
Toluene Molecule ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Interionic Hydrogen ◽  
Distorted Trigonal Bipyramidal

The asymmetric unit of the title compound, [Co(C24H30N2P2)(CO)3][Co(CO)4]·0.25C7H8, consists of two crystallographically independent cations with similar conformations, two anions, and one-half of a toluene molecule disordered about an inversion centre. In the cations, a Co/P/N/P four-membered slightly bent metallacycle is the key structural element. The pendant NH group is not coordinated to the CoIatom, which displays a distorted trigonal–bipyramidal coordination geometry. Weak interionic hydrogen bonds are observed between the NH groups and a carbonyl group of the tetrahedral [Co(CO)4]−anions.

scholarly journals Poly[(μ3-5-hydroxyisophthalato)[μ2-1,1′-(1,4-phenylene)bis(1H-imidazole)]copper]

IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Hong-Hong Tao ◽  
Yu-Han Chen ◽  
Ya-Sai Liu ◽  
Zhuo-Ga Deji
Keyword(s):  
Three Dimensional ◽  
Dimensional Structure ◽  
Supramolecular Network ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Bridging Ligands ◽  
Trigonal Bipyramidal ◽  
A Chain ◽  
Organic Linker ◽  
Distorted Trigonal Bipyramidal

The title compound, [Cu(C8H4O5)(C12H10N4)]n, was obtained by the reaction of copper(II) nitrate hydrate, with the OH-BDC organic linker and bib molecules [OH-BDC = 5-hydroxyisophthalic acid and bib = 1,4-bis(imidazol-1-yl)benzene]. The asymmetric unit comprises one CuIIcation, one OH-BDC−2dianion and a bib ligand. The CuIIion is coordinated by three carboxylate O atoms and two bib-N atoms, all from bridging ligands, to form a slightly distorted trigonal–bipyramidal geometry. The CuIIions are bridged by OH-BDC−2ligands, forming a chain along the [100] direction; the chains are connected by bib molecules to form a two-dimensional net. In topological terms, considering the CuIIatoms as nodes and the OH-BDC−2ligands as linkers, the two-dimensional structure can be simplified as a typical 2-nodal 3,5 L2 plane network. The crystal structure features O—H...O hydrogen bonds between OH-BDC−2anions, resulting in a three-dimensional supramolecular network.

scholarly journals [2-(2,2′-Bipyridin-6-yl-κ2N1,N1′)benzo[b][1,5]naphthyridine-κN1]dichloridozinc

IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Yosuke Tezuka ◽  
Kiyoshi Tsuge ◽  
Hideki Ohtsu
Keyword(s):  
Title Complex ◽  
Stacking Interactions ◽  
Coordination Environment ◽  
Axis Direction ◽  
Trigonal Bipyramidal ◽  
Π Stacking ◽  
Distorted Trigonal Bipyramidal

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.

scholarly journals Crystal structure of a mixed-valence μ-oxide Sn12cluster

2014 ◽  
Vol 70 (11) ◽  
pp. m378-m379 ◽  
Author(s):  
Marina M. Kireenko ◽  
Kirill V. Zaitsev ◽  
Sergey S. Karlov ◽  
Mikhail P. Egorov ◽  
Andrei V. Churakov
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Complex Molecule ◽  
Mixed Valence ◽  
Asymmetric Unit ◽  
Coordination Numbers ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Solvent Molecules ◽  
Distorted Trigonal Bipyramidal

The mixed-valence μ-oxide Sn12cluster, decacarbonyltetra-μ4-oxido-hexa-μ3-oxido-tetrakis[μ-2,2′-(pyridine-2,6-diyl)bis(1,1-diphenylethanolato)]decatin(II)ditin(IV)dimolybdenum(O)(2Mo—Sn) toluene heptasolvate, [Mo2Sn12(C33H27NO2)4O10(CO)10]·7C7H8, has a crystallographically imposed inversion centre. The asymmetric unit also contains three and a half toluene solvent molecules, one of which is disordered about a centre of symmetry. The complex molecule comprises six distinct Sn atom species with four different coordination numbers, namely 3, 4, 5, and 6. The SnIIatoms forming the central Sn10O10core adopt distorted trigonal–pyramidal, square-pyramidal and octahedral coordination geometries provided by the μ-oxide atoms and by the O- and N-donor atoms of two pyridinediethanolate ligands. The terminal SnIVatoms have distorted trigonal–bipyramidal coordination geometries, with a μ4-oxide atom and the N atom of a pyridinediethanolate ligand occupying the axial positions, and the Mo atom of a Mo(CO)5group and the alkoxy O atoms of a ligand forming the equatorial plane. In the crystal, weak intra- and intermolecular C—H...O hydrogen bonds are observed.

scholarly journals Crystal structure of dibromido(N,N-dimethylformamide-κO){2-(1H-indol-3-yl)-N-[(quinolin-2-yl-κN)methylidene]ethanamine-κN}cadmium

2015 ◽  
Vol 71 (2) ◽  
pp. m31-m32 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Natalia O. Sharkina ◽  
Yuliya M. Davydenko
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Equatorial Plane ◽  
Title Complex ◽  
Coordination Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

In the mononuclear title complex, [CdBr2(C20H17N3)(C3H7NO)], synthesized from the quinoline-derived Schiff base 2-(1H-indol-3-yl)-N-(quinolin-2-ylmethylene)ethanamine (IQME), the coordination geometry around the Cd2+atom is distorted trigonal bipyramidal, the axial positions being occupied by the quinoline N atom [Cd—N = 2.401 (3) Å] and one dimethylformamide O-atom donor [Cd—O = 2.399 (2) Å]. The equatorial plane is formed by the imine N atom [Cd—N = 2.293 (3) Å] and two bromides [Cd—Br = 2.5621 (8) and 2.5676 (8) Å], with the deviation of the CdIIatom from the equatorial plane being 0.046 (1) Å. An intramolecular C—H...Br interaction occurs. In the crystal, N—H...Br interactions generate [101] chains.

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