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.

THE VIBRATIONAL SPECTRA OF THE FORMATE, ACETATE, AND OXALATE IONS

1956 ◽  
Vol 34 (2) ◽  
pp. 170-178 ◽  
Author(s):  
K. Ito ◽  
H. J. Bernstein
Keyword(s):  
Aqueous Solution ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Vibrational Assignments ◽  
Oxalate Ions ◽  
Oxalate Ion ◽  
Depolarization Ratios

The infrared spectra of the formate, acetate, and oxalate ions have been obtained for both the solid and aqueous solution. The Raman spectra of these ions with depolarization ratios have been obtained in aqueous solution. Vibrational assignments have been made which differ slightly for the acetate ion and more markedly for the oxalate ion from earlier work. The depolarization ratios confirm Fonteyne’s assignment for the formate ion.

Low frequency vibrational spectra of lithium formate monohydrate and its aqueous solutions

1983 ◽  
Vol 61 (10) ◽  
pp. 2282-2284 ◽  
Author(s):  
A. Agarwal ◽  
D. P. Khandelwal ◽  
H. D. Bist
Keyword(s):  
Aqueous Solutions ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Tetrahedral Structure ◽  
Structure Of Water ◽  
Lithium Formate ◽  
Lithium Formate Monohydrate

The far infrared and Raman spectra of polyerystalline lithium formate monohydrate and the Rayleigh wing scattering of its aqueous solutions are reported. Three new bands in solid and bands due to librations of HCOO− and the quasi-tetrahedral structure of water in solutions have been identified.

Darstellung, Schwingungsspektren und Normalkoordinatenanalysen der Dioxoosmate(VI) trans-[OsO2(CN)2(ox)]2-, transs-[OsO2(CN)2(mal)]2- und trans-[OsO2(CN)2(N2H2C2O2)]2- / Synthesis, Vibrational Spectra and Normal Coordinate Analysis of the Dioxoosmates(VI) frans-[OsO2(CN)2(ox)]2- , trans-[OsO2 (CN)2(mal)]2- and trans-[OsO2 (CN)2(N2H2C2O2)]2-

1999 ◽  
Vol 54 (9) ◽  
pp. 1116-1121
Author(s):  
A. Strueß ◽  
W. Preetz
Keyword(s):  
Aqueous Solution ◽  
Oxalic Acid ◽  
Raman Spectra ◽  
Malonic Acid ◽  
Vibrational Spectra ◽  
Room Temperature ◽  
Normal Coordinate ◽  
X Ray ◽  
Ir And Raman

By careful acidification of the aqueous solution of trans-K2[OsO2(OH)4] in the presence of the required amount of cyanide ions with oxalic acid, malonic acid or oxamide the osmyl complexes trans-[OsO2(CN)2(ox)]2- (1), trans-[OsO2(CN)2(mal)]2- (2) und trans-[OsO2(CN)2(N2H2C2O2)]2- (3) are formed. The IR and Raman spectra of the (n-Bu4N) and (Et4N) salts of 1, 2 und 3 were measured at room temperature. Based on the molecular parameters of the X-ray determination of related complexes normal coordinate analyses have been performed and the vibrations were assigned. The valence force constants are fd(C≡N ) = 16.95, fd(Os=O) = 6.68 - 6.70, fd(Os-O) = 2.55 - 2.60, fd(Os-C) = 2.55 and fd(Os-N) = 2.30 mdyn/Å. For the chelate ligands, fd(C =0) ranges from 11.03 - 11.15, fd(C-O/N) from 4.86 - 5.05 and fd(C-C) from 4.07 - 4.70 mdyn/Å.

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).

Raman spectra of crystalline hydrolysis products of aqueous solutions of mercury(II) nitrate

1972 ◽  
Vol 25 (6) ◽  
pp. 1159 ◽  
Author(s):  
RPJ Cooney ◽  
JR Hall
Keyword(s):  
Raman Spectrum ◽  
Aqueous Solutions ◽  
Raman Spectra ◽  
Hydrolysis Products ◽  
Free Ion ◽  
Polymeric Compounds ◽  
Hydrolysis Of

Raman spectra of the crystalline polymeric compounds [HgOH]NO3, [Hg3O2](NO3)2, and [Hg3O2](NO3)2,H2O, obtained by hydrolysis of aqueous solutions of mercury(11) nitrate, are reported. For purposes of comparison with [HgOH]NO3, the Raman spectrum of polymeric [HgNH2]Cl is also recorded. The two most significant aspects of the Raman spectra of these hydrolysis products are the dependence of the frequency of the most intense Hg-O stretching mode on the number of mercury atoms bonded to a common oxygen in each compound and the appearance of the nitrate spectrum, which suggests in each case that the ion has symmetry lower than the free ion symmetry (D3h). The spectrum of the solution from which the compound [HgOH]NO3 is isolated is notable for the intensity of the Hg-ONO2 stretching mode and the magnitude of the splitting of the originally degenerate v3 frequency of the free ion.

Raman Spectral Investigation of the Complex Species of Ferric Chloride in Concentrated Aqueous Solution

1972 ◽  
Vol 26 (6) ◽  
pp. 579-584 ◽  
Author(s):  
A. L. Marston ◽  
S. F. Bush
Keyword(s):  
Aqueous Solution ◽  
New Species ◽  
Aqueous Solutions ◽  
Raman Spectra ◽  
Ferric Chloride ◽  
Line Pattern ◽  
Complex Species ◽  
Spectral Changes ◽  
Raman Spectral ◽  
A New Species

Raman spectra of concentrated aqueous solutions of ferric chloride were recorded in the spectral range 50 to 500 cm−1. In near-saturated solutions, spectra show a four-line pattern typical of the tetrahedral FeCl4– complex: 390 cm−1 (w); 335 cm−1 (vs, p); 135 cm−1 (w); 110 cm−1 (s). At lower concentrations a new species dominates the spectrum, showing characteristic Raman lines at 318 cm−1 (s, p) and 165 cm−1 (vw). Conventional investigations of spectral changes with concentration of Fe(III) and chloride, coupled with group theoretical arguments, indicate that the stoichiometry of the complex must be FeCl3 or lower. Of the several symmetries that a FeCl3 complex might assume (C2v, C3v, D2h (dimer), and D3h), the D3h trigonal bipyramid structure FeCl3·2H2O with three equatorial chloride ligands and two axial waters is most compatible with the spectral evidence.

scholarly journals Effect of addition of organic solvents on properties of the chemically synthesized polyaniline in aqueous solutions

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Shuangxi Xing ◽  
Shengyu Jing ◽  
Chun Zhao ◽  
Zichen Wang
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Raman Spectra ◽  
Organic Solvents ◽  
High Conductivity ◽  
Ir And Raman Spectra ◽  
Conductivity Measurements ◽  
Ft Ir ◽  
Ir And Raman

AbstractIn the process of polymerization of aniline in aqueous solution, different kinds or volumes of organic solvents were added. The effects of the organic solvents on the morphology, structure, conductivity and water-dispersity of the resulting polyaniline (PANI) were investigated with the aid of SEM, UV-Vis, FT-IR and Raman spectra and conductivity measurements. The results showed that the weak H-bond interactions between PANI and the solvents might play an important role in forming uniform nanofibers with relatively high conductivity and good waterdispersity. However, excessive addition of organic solvents led to the aggregation of the nanofibers and the corresponding PANI had a bad water-dispersity.

Ramanspektroskopische Untersuchungen an festen und in Wasser gelösten Polyboraten / Investigations of Solid Polyborates and their Aqueous Solutions by Raman Spectroscopy

1979 ◽  
Vol 34 (4) ◽  
pp. 585-590 ◽  
Author(s):  
Ralf Janda ◽  
Gert Heller
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
Aqueous Solutions ◽  
Raman Spectra ◽  
Solubility In Water

Abstract Raman spectra of solid H3BO3, Na2[B4O5(OH)4] · 8 H2O, K[B5O6(OH)4] · 2H2O and Na[B(OH)4] were recorded between 300 and 1500 cm-1 as well as of borax in aqueous solutions as a function of concentration and pH. Because of better solubility in water, the Raman spectrum of ammonium tetraborate in aqueous solution was also recorded as a function of pH. For comparisons the Raman spectra of solid (NH4)2[B4O5(OH)4] · 2 H2O, β-NH4[B5O6(OH)4] · 2 H2O, NH4[B5O6(OH)4] · 0,67 H2O and NH4[B5O6(OH)4] were considered. In solution, all lines in the Raman spectra could be assigned and the degree of depolarization measured. The assigned Raman frequencies can be used for the identification of unknown B-O-lines and therefore of unknown borate or polyborate structures.

Effect of thermal history of aqueous solutions of KCl on the metastable zone width

1984 ◽  
Vol 49 (3) ◽  
pp. 559-569 ◽  
Author(s):  
Jaroslav Nývlt
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Thermal History ◽  
Equilibrium Solubility ◽  
Metastable Zone Width ◽  
Zone Width ◽  
Preceding Experiment ◽  
History Of ◽  
Metastable Zone ◽  
The Given

The metastable zone width of an aqueous solution of KCI was measured as a function of the time and temperature of overheating above the equilibrium solubility temperature. It has been found that when the experiments follow close upon one another, the parameters of the preceding experiment affect the results of the experiment to follow.The results are interpreted in terms of hypotheses advanced in the literature to account for the effect of thermal history of solution. The plausibility and applicability of these hypotheses are assessed for the given cause of aqueous solution of a well soluble electrolyte.

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