Raman spectra of rnercury(II) nitrate in aqueous solution and as the crystalline hydrate

1969 ◽  
Vol 22 (2) ◽  
pp. 337 ◽  
Author(s):  
RPJ Cooney ◽  
JR Hall
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Aqueous Solutions ◽  
Crystal Lattice ◽  
Raman Spectra ◽  
Raman Line ◽  
Covalent Bond ◽  
Crystalline Hydrate ◽  
Concentrated Aqueous Solutions ◽  
Mercury Nitrate

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).

scholarly journals Molecular Species in Concentrated Aqueous Solutions of Cadmium Halides as Inferred from the Raman Spectra.

1979 ◽  
Vol 33a ◽  
pp. 11-13 ◽  
Author(s):  
Chr. Knakkergaard Møller ◽  
Kurt Nielsen ◽  
Terje Østvold ◽  
Arne Holm ◽  
Nils H. Toubro ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Raman Spectra ◽  
Molecular Species ◽  
Concentrated Aqueous Solutions

Vibrational Spectral Studies of Hexaquozinc Nitrate and Hexaquozinc Nitrate-d2

1971 ◽  
Vol 49 (9) ◽  
pp. 1510-1514 ◽  
Author(s):  
M. H. Brooker ◽  
D. E. Irish
Keyword(s):  
Aqueous Solutions ◽  
Raman Spectra ◽  
Deuterium Oxide ◽  
Ionic Association ◽  
Spectral Studies ◽  
Site Symmetry ◽  
Infrared And Raman Spectra ◽  
Concentrated Aqueous Solutions ◽  
Site Group ◽  
A Site

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.

The formation of rhodochrosite–smithsonite (MnCO3–ZnCO3) solid-solutions at 5°C

1995 ◽  
Vol 59 (396) ◽  
pp. 481-488 ◽  
Author(s):  
Michael E. Böttcher
Keyword(s):  
Aqueous Solution ◽  
Infrared Spectroscopy ◽  
Aqueous Solutions ◽  
Crystal Lattice ◽  
Powder Diffraction ◽  
Solid Solutions ◽  
Solubility Product ◽  
Experimental Conditions ◽  
X Ray ◽  
Bicarbonate Solutions

AbstractMnxZn(1−x)CO3 solid-solutions were prepared at 5°C by precipitation from metal-bearing bicarbonate solutions. The solids were identified by X-ray powder diffraction and infrared spectroscopy. Zn2+ ions substitute extensively for Mn2+ ions in the crystal lattice of anhydrous rhombohedral carbonates. Throughout the 24 h during which the experiments were conducted, the aqueous solutions remained undersaturated with respect to pure oxides, sulphates, hydroxides and hydroxysulphates. The solutions, however, were supersaturated with MnxZn(1−x)CO3 of any given composition. Besides the anhydrous rhombohedral carbonates, Zn4(OH)2(CO3)3·4H2O was precipitated from an aqueous solution with initially high Zn2+ concentration. The negative logarithm of the solubility product of Zn4(OH)2(CO3)3·4H2O was estimated theoretically to be 43.9 (25°C). Remaining saturation with respect to Zn4(OH)2(CO3)3·4H2O was calculated accordingly. The suggestion is made that hydrated zinc hydroxycarbonate is metastable under the experimental conditions used here, but that it should transform into anhydrous carbonates.

The Raman Spectra and Conformational Change of Simple Sodium Alkylsulfates and Sodium Alkyisulfonates in Aqueous Solution

1983 ◽  
Vol 38 (9) ◽  
pp. 1046-1047 ◽  
Author(s):  
Teruki Ikeda ◽  
Tadayoshi Yoshida ◽  
Hirofumi Okabayashi
Keyword(s):  
Aqueous Solution ◽  
Concentration Dependence ◽  
Raman Spectra ◽  
Raman Line ◽  
Polar Group ◽  
Group Effect ◽  
Trans Form ◽  
Molecular Conformations ◽  
Sodium Alkylsulfates ◽  
Single Bonds

Abstract In order to study the polar group effect upon conformations about CH2-CH2 single bonds, the Raman spectra of simple sodium alkylsulfates and sodium alkyisulfonates were measured. The ethylsulfate ion (CH3-CH2-O-SO3-) in aqueous solution was found to take the trans form about the CH2 - O bond in 0.67-5.41 mol/1. For the n-propylsulfonate ion the Raman line due to the gauche form about the CH2 -CH2 bond was also observed, the trans form becoming predominant at higher concentrations. For the sulfate and sulfonate ions having butyl and hexyl chains, the concentration dependence of their molecular conformations was also investigated.

A spectroscopic study of solvent effects on the formation of Cu(II)-chloride complexes in aqueous solution

2021 ◽  
Author(s):  
ning zhang ◽  
Jianfeng Tang ◽  
Yuntian Ma ◽  
Minghui Liang ◽  
Dewen Zeng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Spectroscopic Study ◽  
Solvent Effects ◽  
Chloride Complexes ◽  
Concentrated Aqueous Solutions ◽  
X Ray ◽  
X Ray Absorption

A combination of electronic (UV-Vis) and X-ray absorption (EXAFS, XANES) spectroscopies has been used to investigate the formation of copper(II)/chloride complexes in concentrated aqueous solutions. It is established that lowering...

Vibrational spectra of mercury(I) nitrate in aqueous solution and of the crystalline hydrolysis products

1978 ◽  
Vol 31 (12) ◽  
pp. 2601 ◽  
Author(s):  
K Tan ◽  
MJ Taylor
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Hydrolysis Products ◽  
Mercurous Nitrate

Aqueous solutions of 'mercurous nitrate' are shown by Raman spectra to contain the complexes [Hg2(OH2)NO3]+ and [Hg2(OH2)2]2+. Crystalline dimercury(I) nitrate, Hg2(NO3)2,2H2O, and its solid hydrolysis products Hg2(OH)2,3Hg2(NO3)2, 2Hg2(OH)2,3Hg2(NO3)2,H2O and Hg2(OH)2,- Hg2(NO3)2 have been obtained: the vibrational spectra are reported and interpreted in terms of possible structures. Modes v(Hg-Hg) appear in the range 170- 200 cm-1 and are sensitive to the particular combination of the ligands OH, ONO2, and H2O attached to the dimercury(I) ion.

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