Thermal and spectroscopic studies of solid oxamate of light trivalent lanthanides

2012 ◽  
Vol 111 (1) ◽  
pp. 349-355 ◽  
Author(s):  
F. J. Caires ◽  
L. S. Lima ◽  
D. J. C. Gomes ◽  
A. C. Gigante ◽  
O. Treu-Filho ◽  
...  
2011 ◽  
Vol 108 (1) ◽  
pp. 371-379 ◽  
Author(s):  
D. A. Gálico ◽  
B. B. Holanda ◽  
G. L. Perpétuo ◽  
E. Schnitzler ◽  
O. Treu-Filho ◽  
...  

2014 ◽  
Vol 575 ◽  
pp. 226-232 ◽  
Author(s):  
D.A. Gálico ◽  
B.B.C. Holanda ◽  
R.B. Guerra ◽  
A.O. Legendre ◽  
D. Rinaldo ◽  
...  

Author(s):  
Vineela Balisetty ◽  
Kanamaluru Vidyasagar

The quaternary A 2W3SeO12 (A = NH4, Cs, Rb, K or Tl) selenites have been prepared in the form of single crystals by hydrothermal and novel solid-state reactions. They were characterized by X-ray diffraction, thermal and spectroscopic studies. All of them have a hexagonal tungsten oxide (HTO) related [W3SeO12]2− anionic framework with pyramidally coordinated Se4+ ions. The known A 2W3SeO12 (A = NH4, Cs or Rb) compounds are isostructural with the Cs2W3TeO12 compound and have a non-centrosymmetric layered structure containing intra-layer Se—O bonds. The new compound K2W3SeO12(α) is isostructural with the K2W3TeO12 compound and has a centrosymmetric three-dimensional structure containing interlayer Se—O bonds. It is inferred that the new Tl2W3SeO12 compound has the same three-dimensional structure as K2W3SeO12(α).


2013 ◽  
Vol 2 (1) ◽  
pp. 45 ◽  
Author(s):  
Diogo Alves Gálico ◽  
Renan Barrach Guerra ◽  
Alexandre De Oliveira Legendre ◽  
Egon Schnitzler ◽  
Roni Antonio Mendes ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document