scholarly journals Orientational Disorder in Adamantane and Adamantanecarboxylic Acid

ChemPhysChem ◽  
2017 ◽  
Vol 18 (5) ◽  
pp. 459-464 ◽  
Author(s):  
Edward O. R. Beake ◽  
Matthew G. Tucker ◽  
Martin T. Dove ◽  
Anthony E. Phillips
Keyword(s):  
Orientational Disorder ◽  
Adamantanecarboxylic Acid

scholarly journals Crystallographic features of ammonium fluoroelpasolites: dynamic orientational disorder in crystals of (NH4)3HfF7 and (NH4)3Ti(O2)F5

2017 ◽  
Vol 73 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Anatoly A. Udovenko ◽  
Alexander A. Karabtsov ◽  
Natalia M. Laptash
Keyword(s):  
Single Crystal ◽  
Electron Density ◽  
Diffraction Data ◽  
Central Atom ◽  
X Ray Diffraction ◽  
Dynamic Nature ◽  
Orientational Disorder ◽  
High Quality ◽  
Structural Units ◽  
X Ray

A classical elpasolite-type structure is considered with respect to dynamically disordered ammonium fluoro-(oxofluoro-)metallates. Single-crystal X-ray diffraction data from high quality (NH4)3HfF7 and (NH4)3Ti(O2)F5 samples enabled the refinement of the ligand and cationic positions in the cubic Fm \bar 3 m (Z = 4) structure. Electron-density atomic profiles show that the ligand atoms are distributed in a mixed (split) position instead of 24e. One of the ammonium groups is disordered near 8c so that its central atom (N1) forms a tetrahedron with vertexes in 32f. However, a center of another group (N2) remains in the 4b site, whereas its H atoms (H2) occupy the 96k positions instead of 24e and, together with the H3 atom in the 32f position, they form eight spatial orientations of the ammonium group. It is a common feature of all ammonium fluoroelpasolites with orientational disorder of structural units of a dynamic nature.

Quinolinotriazole-β-cyclodextrin and its adamantanecarboxylic acid complex as efficient water-soluble fluorescent Cd2+ sensors

2010 ◽  
Vol 18 (4) ◽  
pp. 1415-1420 ◽  
Author(s):  
Ying-Ming Zhang ◽  
Yong Chen ◽  
Zhi-Qiang Li ◽  
Nan Li ◽  
Yu Liu
Keyword(s):  
Water Soluble ◽  
Acid Complex ◽  
Adamantanecarboxylic Acid

Orientational disorder in lithium sodium sulfate

1995 ◽  
Vol 102 (17) ◽  
pp. 6941-6945 ◽  
Author(s):  
Gamini Dharmasena ◽  
Roger Frech
Keyword(s):  
Sodium Sulfate ◽  
Orientational Disorder

Separation of Orientational Disorder in the X-Ray Analysis of the Kinetically Stabilized 2-Silanaphthalene

2000 ◽  
Vol 73 (9) ◽  
pp. 2157-2158 ◽  
Author(s):  
Keiji Wakita ◽  
Norihiro Tokitoh ◽  
Renji Okazaki
Keyword(s):  
Orientational Disorder ◽  
X Ray

Orientational Disorder in Chiral Bilayer Dielectric Metasurfaces

2021 ◽  
Author(s):  
Katsuya Tanaka ◽  
Aso Rahimzadegan ◽  
Dennis Arslan ◽  
Stefan Fasold ◽  
Michael Steinert ◽  
...  
Keyword(s):  
Orientational Disorder ◽  
Bilayer Dielectric

scholarly journals Orientational disorder in plastic neopentane (paralipomena)

1987 ◽  
Vol 48 (9) ◽  
pp. 1513-1519 ◽  
Author(s):  
Ph. Depondt ◽  
M. Debeau
Keyword(s):  
Orientational Disorder

scholarly journals Orientation Ordering and Chiral Superstructures in Fullerene Monolayer on Cd (0001)

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1305
Author(s):  
Yuzhi Shang ◽  
Zilong Wang ◽  
Daxiao Yang ◽  
Yaru Wang ◽  
Chaoke Ma ◽  
...  
Keyword(s):  
Thin Films ◽  
Charge Transfer ◽  
Scanning Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Orientational Disorder ◽  
Temperature Scanning ◽  
Orientation Ordering ◽  
The Individual ◽  
Misorientation Angles

The structure of C60 thin films grown on Cd (0001) surface has been investigated from submonolayer to second monolayer regimes with a low-temperature scanning tunneling microscopy (STM). There are different C60 domains with various misorientation angles relative to the lattice directions of Cd (0001). In the (2√3 × 2√3) R30° domain, orientational disorder of the individual C60 molecules with either pentagon, hexagon, or 6:6 bond facing up has been observed. However, orientation ordering appeared in the R26° domain such that all the C60 molecules adopt the same orientation with the 6:6 bond facing up. In particular, complex chiral motifs composed of seven C60 molecules with clockwise or anticlockwise handedness have been observed in the R4° and R8° domains, respectively. Scanning tunneling spectroscopy (STS) measurements reveal a reduced HOMO–LOMO gap of 2.1 eV for the C60 molecules adsorbed on Cd (0001) due to the substrate screening and charge transfer from Cd to C60 molecules.

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