Raman spectra in the libration region of concentrated aqueous solutions of lithium-6 and lithium-7 halides. Evidence for tetrahedral Li(OH2) 4 +

1977 ◽  
Vol 6 (10) ◽  
pp. 663-670 ◽  
Author(s):  
C. P. Nash ◽  
T. C. Donnelly ◽  
P. A. Rock
1979 ◽  
Vol 33a ◽  
pp. 11-13 ◽  
Author(s):  
Chr. Knakkergaard Møller ◽  
Kurt Nielsen ◽  
Terje Østvold ◽  
Arne Holm ◽  
Nils H. Toubro ◽  
...  

1971 ◽  
Vol 49 (9) ◽  
pp. 1510-1514 ◽  
Author(s):  
M. H. Brooker ◽  
D. E. Irish

Infrared and Raman spectra are reported for the hexaquozinc nitrate crystal. Replacement of water by deuterium oxide causes a remarkable intensity reversal of components in the ν3 nitrate region and provides Raman spectra free from interference in the 2ν2 and ν4 regions. The nitrate spectrum is interpreted in terms of a site group approximation. The spectra are compared with those of concentrated aqueous solutions and partially dehydrated crystals to point up changes which result from a lowered site symmetry and those which result from ionic association.


1969 ◽  
Vol 22 (2) ◽  
pp. 337 ◽  
Author(s):  
RPJ Cooney ◽  
JR Hall

Raman spectra of mercury(II) nitrate in concentrated aqueous solutions (0.7-7.0M) indicate that the nitrate groups are present as associated ions or covalently bound groups. A gradual alteration in the appearance of the nitrate spectrum with increasing concentration is explained in terms of changes in the nature of mercury-nitrate interaction. A Raman line assignable to the stretching of a mercury-nitrate covalent bond has been observed at c. 270 cm-1. The spectrum of solid Hg(NO3)2,H2O differs from spectra of the aqueous solutions, mainly in the region 1300-1450 cm-1. Additional features are attributed to the influence of hydrogen bonding in the crystal lattice or to correlation field effects (anion-anion coupling).


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