[Te8][NbOCl4]2containing an infinite chain-like {[Te–Te–Te–(Te5)]2+}npolycation

2012 ◽  
Vol 68 (10) ◽  
pp. i68-i70 ◽  
Author(s):  
Claus Feldmann ◽  
Dominic Freudenmann
Keyword(s):  
Ionic Liquid ◽  
Single Crystals ◽  
Structure Analysis ◽  
Title Compound ◽  
Energy Dispersive ◽  
The Novel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Edx Analysis ◽  
Lattice Symmetry

The title compound, [Te8][NbOCl4]2, was obtained as translucent black crystals by reaction of elemental tellurium, niobium(V) chloride and niobium(V) oxychloride in the ionic liquid BMImCl (BMImCl is 1-butyl-3-methylimidazolium chloride). The synthesis was performed in argon-filled glass ampoules. According to X-ray structure analysis based on single crystals, the title compound crystallizes with triclinic lattice symmetry and consists of infinite {[Te8]2+}ncations associated with pyramidal [NbOCl4]−anions. The novelcatena-octatellurium(2+) cation is composed of Te5rings that are linkedviaTe3units [Te—Te = 2.6455 (18)–2.8164 (19) Å]. The composition and purity of [Te8][NbOCl4]2were further confirmed by energy-dispersive X-ray diffraction (EDX) analysis.

scholarly journals Some Novel Cobalt Diphenylphosphine Complexes: Synthesis, Characterization, and Behavior in the Polymerization of 1,3-Butadiene

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4067
Author(s):  
Giovanni Ricci ◽  
Giuseppe Leone ◽  
Giorgia Zanchin ◽  
Benedetta Palucci ◽  
Alessandra Forni ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
The Novel ◽  
X Ray Diffraction ◽  
X Ray ◽  
And Behavior

Some novel cobalt diphenylphosphine complexes were synthesized by reacting cobalt(II) chloride with (2-methoxyethyl)diphenylphosphine, (2-methoxyphenyl)diphenylphosphine, and 2-(1,1-dimethylpropyl)-6-(diphenylphosphino)pyridine. Single crystals suitable for X-ray diffraction studies were obtained for the first two complexes, and their crystal structure was determined. The novel compounds were then used in association with methylaluminoxane (MAO) for the polymerization of 1,3-butadiene, and their behavior was compared with that exhibited in the polymerization of the same monomer by the systems CoCl2(PnPrPh2)2/MAO and CoCl2(PPh3)2/MAO. Some significant differences were observed depending on the MAO/Co ratio used, and a plausible interpretation for such a different behavior is proposed.

scholarly journals A Salt Metathesis Route To Ruthenium Carbene Complex Isomers With Pyridine Dicarboxamide-Derived Chelate Pincer Ligands

2007 ◽  
Vol 62 (6) ◽  
pp. 783-790 ◽  
Author(s):  
Carolin Wallenhorst ◽  
Kirill V. Axenov ◽  
Joseph S. M. Samec ◽  
Roland Fröhlich ◽  
Gerhard Erker
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Pincer Ligands ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carbene Complex ◽  
Related Complex

Reaction of the doubly deprotonated pyridine 2,6-dicarboxamido ligand (1) with (PCy3)2Cl2 Ru=CHPh (3a) in THF gave a mixture of (lig)(PCy3)Ru=CHPh isomers (4). The pentane soluble N,N,O-4 isomer was isolated by extraction and characterized by X-ray diffraction. The O,N, O-4 isomer was identified in the residue. Single crystals of the closely related complex (lig)(NHC) Ru=CHPh, O,N,O-5, were obtained from the reaction of 1 with (NHC)(PCy3)Cl2Ru=CHPh (3b) and used for the X-ray crystal structure analysis of the system

[ η6-C6Me6Fe- η5-C5H5]2Fe2Cl6 · 2 CH2Cl2: Bildung und Kristallstruktur / [η6-C6Me6Fe-η5-C5H5]2Fe2Cl6· 2CH2Cl2: Formation and Crystal Structure

1992 ◽  
Vol 47 (8) ◽  
pp. 1075-1078 ◽  
Author(s):  
Karin Ruhlandt-Senge ◽  
Ulrich Müller
Keyword(s):  
Crystal Structure ◽  
Ir Spectrum ◽  
Title Compound ◽  
The Novel ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray

When hexymethylbenzene-cyclopentadienyl-iron reacts with ozone in dichloromethane, the title compound is one of the products. Its crystal structure was determined by X-ray diffraction (R = 0.145 for 1412 unique reflexions). Crystal data: a = 1815.1(8), b = 1314.8(5), c = 1823.0(8) pm, space group Pbca, Z = 8. The sandwich-like [η6-C6Me6Fe-η5-C5H5]+ ions exhibit large thermal motions, and the CH2C12 molecules are disordered in two orientations. The novel [Fe2Cl6]2- ion has the structure of two tetrahedra sharing an edge. Its IR spectrum is reported.

Filling up another Gap: Synthesis and Crystal Structure of Ba2H3I

2011 ◽  
Vol 66 (11) ◽  
pp. 1087-1091 ◽  
Author(s):  
Olaf Reckeweg ◽  
Francis J. DiSalvo
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Single Crystals ◽  
Title Compound ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Bond Lengths

Colorless and transparent single crystals of Ba2H3I were obtained by reacting Ba with dried and sublimed NH4I in a 4 : 1 molar ratio in silica-jacketed Nb ampoules at 1100 K for 13 h. The crystal structure of the title compound was determined and refined by means of single-crystal X-ray diffraction. Ba2H3I crystallizes in a stuffed anti-CdI2 structure isotypic to Sr2H3I in the space group P3̄m1 (no. 164) with the lattice parameters a = 451.86(12) and c = 811.84(23) pm. The structural results for Ba2H3I are consistent with bond lengths and coordination geometries of related binary and ternary hydrides

Synthesis and Structure Analysis of N1,N4,3,6-Tetramethyl-N1,N4-Diphenyl-1,4-Dihydro-1,2,4,5-Tetrazine-1,4-Dicarboxamide

2012 ◽  
Vol 36 (3) ◽  
pp. 178-180 ◽  
Author(s):  
Guo-Wu Rao ◽  
Qi Li ◽  
Zhen-Guo Zhao
Keyword(s):  
Single Crystal ◽  
Structure Analysis ◽  
Title Compound ◽  
Boat Conformation ◽  
X Ray Diffraction ◽  
X Ray

N1, N4,3,6-Tetramethyl- N1, N4-diphenyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboxamide was prepared from 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine, bis(trichloromethyl) carbonate and N-methylaniline. Its structure was confirmed by single-crystal X-ray diffraction. This reaction yields the title compound rather than N1, N2,3,6-tetramethyl- N1, N2-diphenyl-1,2-dihydro-1,2,4,5-tetrazine-1,2- dicarboxamide. The central tetrazine ring of the title compound exhibits a boat conformation and is therefore not homoaromatic.

Energy-dispersive spectroscopic methods applied to X-ray diffraction in single crystals

1975 ◽  
Vol 31 (3) ◽  
pp. 327-333 ◽  
Author(s):  
B. Buras ◽  
J. S. Olsen ◽  
L. Gerward ◽  
B. Selsmark ◽  
A. L. Andersen
Keyword(s):  
Single Crystals ◽  
Energy Dispersive ◽  
Spectroscopic Methods ◽  
X Ray Diffraction ◽  
X Ray ◽  
Energy Dispersive Spectroscopic

ζ-Y2[Si2O7]: Ein neuer Strukturtyp in der Yttrialit-Reihe / ζ -Y2[Si2O7]: A New Structure Type within the Yttrialite Series

2006 ◽  
Vol 61 (9) ◽  
pp. 1054-1060 ◽  
Author(s):  
Ingo Hartenbach ◽  
Steffen F. Meier ◽  
Thomas Schleid
Keyword(s):  
Single Crystals ◽  
Title Compound ◽  
Structure Type ◽  
Unit Cell ◽  
Type Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vertex Sharing ◽  
A Minor ◽  
Oxygen Atoms

Abstract During attempts of preparing yttrium oxotellurates(IV) using Y2O3 and TeO2 in YCl3 fluxes, the occasional reaction of these educts with the walls of the evacuated silica ampoules led to colourless, lath-shaped single crystals of Y2[Si2O7] in the new ζ -type structure as a minor by-product which was investigated by X-ray diffraction. The title compound crystallizes monoclinically in the space group P21/m (a = 503.59(5), b = 806.47(8), c = 732.65(7) pm, β = 108.633(6)°) with two formula units per unit cell. The crystallographically unique Y3+ cation is coordinated by seven oxygen atoms (d(Y-O = 221 - 248 pm) arranged in the shape of a slightly distorted monocapped octahedron. The isolated oxodisilicate units [Si2O7]6− consist of two Si4+ cations and seven O2− anions of which five are crystallographically independent. These pyroanions (d(Si-O) = 161 - 168 pm, ∢ (O-Si-O) = 91 - 117°, ∢ (Si-O-Si) = 156°) exhibit an almost perfectly eclipsed conformation built of a horseshoeshaped backbone with the two silicon and three of the oxygen atoms situated on the mirror planes of the unit cell. The remaining four oxide anions complete this [Si2O7]6− entity of two vertex-sharing [SiO4]4− tetrahedra as terminal ligands for silicon. Assembled in planar layers parallel to (−1 0 1), the [Si2O7]6− anions are packed with their wide basal faces of the tetrahedra pointing towards the small waist of the adjacent units and vice versa. The yttrium cations reside between these layers in order to interconnect them three-dimensionally.

Preparation and Crystal Structure Determination of [(C2Η5)4N]2Hg3Cl8

1995 ◽  
Vol 50 (1) ◽  
pp. 66-70 ◽  
Author(s):  
Inge Pabst ◽  
Peter Sondergeld ◽  
Mirjam Czjzek ◽  
Hartmut Fuess
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Structure Analysis ◽  
Structure Determination ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
Space Group ◽  
Coordination Type ◽  
X Ray

The title compound has been prepared in two different ways: First, by boiling single crystals of [(C2H5)4N]HgCl3 in a mixture of n-hexane/n-octane [4:1] at T = 350 K, and second, in a synthesis from stoichiometric quantities of the components. X-ray structure analysis gave the stoichiometry [(C2H5)4N]2Hg3Cl8, monoclinic, space group P21, a = 7.538(3), b = 19.909(6), c = 10.274(3) Å, β = 95.13(1)°, V = 1535.7(9) A3, Z = 2. The basic [Hg3Cl8]2--units form broken zig-zag chains along [100]. The Hg–Cl distances within the [Hg3Cl8]2- clusters range from 2.315(3) to 2.755(4) Å. This is a new coordination type for halomercurates.

Synthesis and Structure Analysis of N1,N4-di-tert-Butyl-3,6-Dimethyl-1,4-Dihydro-1,2,4,5-Tetrazine-1,4-Dicarboxamide

2012 ◽  
Vol 36 (3) ◽  
pp. 172-174 ◽  
Author(s):  
Guo-Wu Rao ◽  
Jia-Bin Ni ◽  
Qi Li
Keyword(s):  
Single Crystal ◽  
Structure Analysis ◽  
Title Compound ◽  
Boat Conformation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tert Butyl

N1, N4-Di- tert-butyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboxamide was prepared from 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine, and its structure was confirmed by single-crystal X-ray diffraction. This reaction yields the 1,4-dicarboxamide derivative rather than the 1,2-dicarboxamide derivative. The central six-member ring of the title compound has a boat conformation and therefore, is not homoaromatic.

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