scholarly journals Synthesis and X-Ray Crystal Structure of α-Keggin-Type Aluminum-Substituted Polyoxotungstate

10.5772/35618 ◽  
2012 ◽  
Author(s):  
Chika Nozaki ◽  
Yuki Makino ◽  
Mikio Yamasaki ◽  
Yusuke Kataoka ◽  
Yasutaka Kitagawa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
X Ray ◽  
Keggin Type

Synthesis, X-ray Crystal Structure and Spectroscopic Characterization of a Hybrid Material Based on Glycine and α-Keggin Type Polyoxotungstate

2012 ◽  
Vol 22 (3) ◽  
pp. 141-142 ◽  
Author(s):  
Masoud Mirzaei ◽  
Hossein Eshtiagh-Hosseini ◽  
Mohsen Nikpour ◽  
Ahmad Gholizadeh ◽  
Afra Ebrahimi
Keyword(s):  
Crystal Structure ◽  
Hybrid Material ◽  
Spectroscopic Characterization ◽  
X Ray ◽  
Keggin Type

Hydrothermal synthesis and crystal structure of a bisupporting Keggin-polyoxometalate hybrid compound decorated with a copper(II) complex unit

2018 ◽  
Vol 73 (3-4) ◽  
pp. 197-202
Author(s):  
Shu Kui Shi ◽  
Zhan Guo ◽  
Rui Feng ◽  
Lin Yu Jin ◽  
Yan Bai ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Three Dimensional ◽  
Nir Spectroscopy ◽  
X Ray Diffraction ◽  
Hybrid Compound ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Keggin Type ◽  
Keggin Polyoxometalate ◽  
Covalently Linked

AbstractA bisupporting Keggin-type polyoxometalate compound, {[CuII(phen)2]2[(HBW12O40)]}[CuIICl2(phen)]2· 2H2O (phen=1,10-phenathroline) (1), has been synthesized through the hydrothermal method and characterized by IR spectroscopy, elemental analysis, UV/Vis/NIR spectroscopy, and powder and single crystal X-ray diffraction. The bisupporting Keggin-polyoxometalate consists of one Keggin-type [HBW12O40]4−core and two covalently linked copper(II) complex fragments [Cu(phen)2]2+. In the crystal structure π···π interactions, C–H···Cl, O–H···Cl, O–H···O and C–H···O hydrogen bonds lead to a three-dimensional supramolecular structure.

Inorganic–Organic Hybrid Supramolecular Architectures Based on Keggin Polyoxometalates and Crown Ether：Synthesis, Crystal Structure and Electrochemical Properties

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jianhang Shi ◽  
Hongxu Zhang ◽  
Peisen Wang ◽  
Pai Wang ◽  
Junjie Zha ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Electrochemical Properties ◽  
Building Blocks ◽  
Supramolecular Assemblies ◽  
X Ray ◽  
Organic Hybrid ◽  
Keggin Type ◽  
Supramolecular Architectures

Two novel supramolecular assemblies built from Keggin-type polyoxometalates and [18]crown-6 ether building blocks, (K+)4([18]crown-6)4(CH3CN)2[SiM12O40] (M = Mo (1), W (2)) have been synthesized and characterized by single-crystal / Powder X-ray...

A study on α-RuCl3 crystal structure by scanning tunneling microscopy

1989 ◽  
Vol 47 ◽  
pp. 30-31
Author(s):  
H.-J. Cantow ◽  
H. Hillebrecht ◽  
S. Magonov ◽  
H. W. Rotter ◽  
G. Thiele
Keyword(s):  
Crystal Structure ◽  
Density Distribution ◽  
Scanning Tunneling Microscopy ◽  
Electron Density ◽  
Structure Determination ◽  
Electron Density Distribution ◽  
Scanning Tunneling ◽  
Monoclinic Space Group ◽  
Tunneling Microscopy ◽  
X Ray

From X-ray analysis, the conclusions are drawn from averaged molecular informations. Thus, limitations are caused when analyzing systems whose symmetry is reduced due to interatomic interactions. In contrast, scanning tunneling microscopy (STM) directly images atomic scale surface electron density distribution, with a resolution up to fractions of Angstrom units. The crucial point is the correlation between the electron density distribution and the localization of individual atoms, which is reasonable in many cases. Thus, the use of STM images for crystal structure determination may be permitted. We tried to apply RuCl3 - a layered material with semiconductive properties - for such STM studies. From the X-ray analysis it has been assumed that α-form of this compound crystallizes in the monoclinic space group C2/m (AICI3 type). The chlorine atoms form an almost undistorted cubic closed package while Ru occupies 2/3 of the octahedral holes in every second layer building up a plane hexagon net (graphite net). Idealizing the arrangement of the chlorines a hexagonal symmetry would be expected. X-ray structure determination of isotypic compounds e.g. IrBr3 leads only to averaged positions of the metal atoms as there exist extended stacking faults of the metal layers.

X-ray Crystal Structure of ?9-THC-tosylate

Planta Medica ◽  
2008 ◽  
Vol 74 (03) ◽  
Author(s):  
W Gul ◽  
P Carvalho ◽  
D Slade ◽  
M Avery ◽  
JR Duchek ◽  
...  
Keyword(s):  
Crystal Structure ◽  
X Ray

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

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