Crystal structure and electron density distribution of La1.9Bi0.1Mo2O9-δ fast oxide ion conductor

2015 ◽  
Author(s):  
T. Paul ◽  
A. Ghosh
Author(s):  
H.-J. Cantow ◽  
H. Hillebrecht ◽  
S. Magonov ◽  
H. W. Rotter ◽  
G. Thiele

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.


2013 ◽  
Vol 204 ◽  
pp. 21-26 ◽  
Author(s):  
Toru Asaka ◽  
Hiroki Banno ◽  
Shiro Funahashi ◽  
Naoto Hirosaki ◽  
Koichiro Fukuda

2018 ◽  
Vol 6 (13) ◽  
pp. 5290-5295 ◽  
Author(s):  
K. S. McCombie ◽  
E. J. Wildman ◽  
S. Fop ◽  
R. I. Smith ◽  
J. M. S. Skakle ◽  
...  

The crystal structure of the novel oxide ion conductor Ba3WNbO8.5.


1991 ◽  
Vol 46 (12) ◽  
pp. 1621-1624 ◽  
Author(s):  
Hermann Irngartinger ◽  
Jürgen Hauck ◽  
Walter Siebert ◽  
Manfred Hildenbrand

The crystal structure and the X—X difference electron density distribution of 1,3-bis(diisopropylamino)-1,3,dihydro-1,3-diborete (1) has been determined at the temperature of 107 K. Both π-electrons of the folded aromatic four membered ring system (folding angle 47.6°) are uniformly distributed on the four ring bonds with equal lengths (B—C 1.524 A). These bonds are significantly bent.


2007 ◽  
Vol 68 (5-6) ◽  
pp. 758-764 ◽  
Author(s):  
Masahiro Kajitani ◽  
Motohide Matsuda ◽  
Akinori Hoshikawa ◽  
Stefanus Harjo ◽  
Takashi Kamiyama ◽  
...  

2009 ◽  
Vol 50 (5) ◽  
pp. 873-879 ◽  
Author(s):  
A. A. Korlyukov ◽  
M. Yu. Antipin ◽  
M. I. Buzin ◽  
É. A. Zel’bst ◽  
Yu. I. Bolgova ◽  
...  

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