Structural properties of synthetic ionophore GL 2 E 4 diastereomers, 18-membered cyclic lactone tetraepoxides, by X-ray crystal analyses: possible relation between crystal structure and Ca2+-transportation ability

1995 ◽  
Vol 51 (6) ◽  
pp. 1045-1050
Author(s):  
M. Doi ◽  
Y. In ◽  
T. Nishino ◽  
T. Ishida ◽  
M. Inoue ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Structural Properties ◽  
X Ray ◽  
Synthetic Ionophore

Structural properties of synthetic ionophore GL 2 E 4 diastereomers, 18-membered cyclic lactone tetraepoxides, by X-ray crystal analyses: possible relation between crystal structure and Ca2+-transportation ability. Addendum

1996 ◽  
Vol 52 (1) ◽  
pp. 215-215
Author(s):  
M. Doi ◽  
Y. In ◽  
T. Nishino ◽  
T. Ishida ◽  
M. Inoue ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Structural Properties ◽  
International Union ◽  
Acta Cryst ◽  
X Ray ◽  
Structure Factors ◽  
Synthetic Ionophore ◽  
Anisotropic Displacement Parameters

Structure factors, anisotropic displacement parameters, H-atom coordinates and complete geometry for the paper by Doi, In Nishino, Ishida, Inoue, Shibuya, Ohashi, Narita & Kitagawa [Acta Cryst. (1995), B51, 1045–1050] have been deposited with the IUCr (Reference: AS0697). Copies may be obtained through The Mangaging Editor, International Union of Crystallography, 5 Abbey Square, Chester CH1 2HU, England.

Structural Properties of a Dimeric Phenylcyanamidocopper(I) Complex, [{Cu(PPh3)2(C6H5NCN)}2]

2000 ◽  
Vol 53 (12) ◽  
pp. 971 ◽  
Author(s):  
Eric W. Ainscough ◽  
Andrew M. Brodie ◽  
Peter C. Healy ◽  
Joyce M. Waters
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Structural Properties ◽  
Structure Determination ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Cross Polarization ◽  
X Ray ◽  
Angle Spinning

The X-ray crystal structure determination of bis[-(phenylcyanamido)bis(triphenylphosphine)copper(I)], [{Cu(PPh3)2(C6H5NCN)}2], (1) is reported. The complex has a centrosymmetric dimeric structure with the phenylcyanamide ligands bridging the copper atoms in a -1,3-fashion. The structure is compared with that of the 4-methylphenylcyanamido complex, [{Cu(PPh3)2(4-MeC6H4NCN)}2] (2), and the differences observed in the Cu–P bond lengths compared with changes in the solid state 31P cross-polarization magic-angle spinning (CPMAS) spectra of the two complexes.

Study vibrational and structural properties of Cu3SeTe by raman spectroscopy and XRD

2021 ◽  
pp. 2150271
Author(s):  
S. I. Ibrahimova ◽  
S. H. Jabarov ◽  
N. A. Aliyeva ◽  
Y. I. Aliyev
Keyword(s):  
Crystal Structure ◽  
Raman Spectroscopy ◽  
Structural Properties ◽  
Frequency Range ◽  
X Ray Diffraction ◽  
Cubic Symmetry ◽  
Space Group ◽  
X Ray ◽  
Raman Modes

The compounds Cu3SeTe were synthesized, the crystal structure and atomic dynamics were studied. As a result of X-ray diffraction studies, it was determined that the crystal structure of this compound corresponds to the cubic symmetry of the space group P-43 m. The studies of atomic dynamics were carried out by the method of Raman spectroscopy in the frequency range [Formula: see text]–800 cm[Formula: see text]. It was found that the Raman modes obtained at frequencies [Formula: see text], 91.47, 119.83, 139.51, 208.18 and 266.41 cm[Formula: see text] correspond to vibrations of metal–chalcogen and chalcogen–chalcogen bonds.

scholarly journals The Technology and Structural Properties of Special Glass Modified (Ba0.6Pb0.4)TiO3 Ceramics

2016 ◽  
Vol 61 (4) ◽  
pp. 1761-1766
Author(s):  
B. Wodecka-Dus ◽  
M. Adamczyk ◽  
T. Goryczka ◽  
J. Dzik ◽  
D. Radoszewska ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Grain Size ◽  
High Temperature ◽  
Structural Properties ◽  
Unit Cell ◽  
Basic Material ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
X Ray

Abstract The present paper widely describes the details of technology of (Ba0.6Pb0.4)TiO3 ceramics modified with PbO-B2O3-Al2O3-WO3 special glass, as well as the influence of admixture on the microstructure and crystal structure of basic material. The microstructure investigations reveal the significant increase of grain size and a decrease of pores participation in volume of modified samples, whereas the X-Ray Diffraction (XRD) measurements show a decrease of the volume of unit cell. The obtained results are discussed due to processes occurring during the sintering process at high temperature.

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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