A new bridging geometry for sulphur dioxide in [Mo(CO)2(PPh3)-(pyridine)(µ-SO2)]2·2CH2Cl2; X-ray crystal structure

1981 ◽  
pp. 305-306 ◽  
Author(s):  
Gordon D. Jarvinen ◽  
Gregory J. Kubas ◽  
R. R. Ryan
Keyword(s):  
Crystal Structure ◽  
Sulphur Dioxide ◽  
X Ray

The synthesis and X-ray crystal structure of triiodotellurium(IV) hexafluoroarsenate(V), TeI3AsF6

1981 ◽  
Vol 59 (19) ◽  
pp. 2876-2878 ◽  
Author(s):  
Jack Passmore ◽  
George Sutherland ◽  
Peter S. White
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Sulphur Dioxide ◽  
Space Group ◽  
X Ray ◽  
R Factor ◽  
Anion Interaction

TeI3AsF6 was prepared quantitatively from the reaction of iodine, tellurium, and arsenic pentafluoride in sulphur dioxide solution. Single crystals of TeI3AsF6 are monoclinic, a = 8.243(2), b = 10.755(2), c = 12.660(2) Å; β = 100.91(2)°, V = 1102 Å3. The structure was refined in the space group P21/c to a conventional R factor of 0.075 for 1551 independent reflections with I ≥ 2σ(I). The structure consists of essentially discrete TeI3+ cations and AsF6– anions with some cation–anion interaction. The TeI3+ cation has approximate C3v symmetry with an average Te—I distance of 2.667 Å and I—Te—I angle of 99.90°.

Notes. Reaction of manganese(II) arsine oxide complexes with sulphur dioxide: some unexpected products. The X-ray crystal structure of [(Ph3AsO)2H]I3

1988 ◽  
pp. 1095 ◽  
Author(s):  
Brian Beagley ◽  
Oraib El-Sayrafi ◽  
George A. Gott ◽  
David G. Kelly ◽  
Charles A. McAuliffe ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Sulphur Dioxide ◽  
X Ray

Preparation and Crystal Structure Determination of Sulphur Dioxide Solvate Crystals with Cetyl- and Dodecyltrimethylammonium Bromide

2008 ◽  
Vol 63 (9) ◽  
pp. 1087-1092 ◽  
Author(s):  
Denitsa Shopova ◽  
Robert Dinnebier ◽  
Martin Jansen
Keyword(s):  
Crystal Structure ◽  
Sulphur Dioxide ◽  
Cetyltrimethylammonium Bromide ◽  
Room Temperature ◽  
Chelating Agents ◽  
Three Dimensional ◽  
Dodecyltrimethylammonium Bromide ◽  
X Ray ◽  
Dimensional Crystal

Cetyltrimethylammonium bromide (CTAB) and dodecyltrimethylammonium bromide (DTAB) form with sulphur dioxide crystalline solvates which have been characterised by Raman spectroscopy and X-ray powder diffraction (XRPD) at room temperature. In both crystal structures, the fully extended CTAB and DTAB cations are oriented along the a axes, forming infinite parallel stacks along the b axes. Neighbouring stacks form sheets with the bromide anions and the sulphur dioxide molecules acting as chelating agents. Consecutive sheets are flipped and shifted, thus building the three-dimensional crystal structure in a brick-like manner.

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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