Concentration effects in the vibrational spectra of aqueous solutions of nitrites

Reactions of tetrakis(acetoxymercuri)methanes C(HgOOCCR3)4 (R = H, or F) in aqueous solutions with methylsulfane CH3SH, or sulfane H2S, yield tetrakis(methylthiomercuri)methane C(HgSCH3)4, and μ-dithiotetramercurimethane CHg4S2, respectively, both insoluble in common solvents and thermally remarkably stable. The central CHg4 groups of the starting materials have been preserved under the reaction conditions, thus tetrahedral entities C(HgS–)4 are common to both compounds. In the polymeric, amorphous CHg4S2 the CHg4 units are linked by sulfur bridges in a highly disordered manner, as is suggested by vibrational spectra. In other respects close similarities in the vibrational behaviour of these CHg4 fragments and of the isosteric NHg4 tetrahedra in tetramercurioammonium complexes have been observed.

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

Canadian Journal of Chemistry ◽

10.1139/v83-394 ◽

1983 ◽

Vol 61 (10) ◽

pp. 2282-2284 ◽

Cited By ~ 5

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.

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Influence of changes in structure on the vibrational spectra of sulfates in aqueous solutions

Journal of Applied Spectroscopy ◽

10.1007/bf00607802 ◽

1969 ◽

Vol 10 (5) ◽

pp. 518-522 ◽

Cited By ~ 1

Author(s):

L. V. Volod'ko ◽

Lieh T'han Huoah

Keyword(s):

Aqueous Solutions ◽

Vibrational Spectra

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Über Cyanatomercurate M2Hg3(NCO)8 (M = K, Rb, Cs) - Synthesen, Kristallstrukturen und Schwingungsspektren / On Cyanatomercurates M2Hg3(NCO)8 (M = K, Rb, Cs) - Syntheses, Crystal Structures and Vibrational Spectra

Zeitschrift für Naturforschung B ◽

10.1515/znb-1978-0606 ◽

1978 ◽

Vol 33 (6) ◽

pp. 597-602 ◽

Cited By ~ 6

Author(s):

Gerhard Thiele ◽

Peter Hilfrich

Keyword(s):

Crystal Structure ◽

Vibrational Spectrum ◽

Aqueous Solutions ◽

Cell Volume ◽

Structure Analysis ◽

Vibrational Spectra ◽

Crystal Structure Analysis ◽

First Approximation ◽

Distorted Octahedra ◽

Van Der Waals Radii

Abstract By mixing aqueous solutions of Hg(CH3COO)2 and MOCN (M = K, Rb, Cs) the tri-clinic compounds M2Hg3(NCO)8 are formed. In a first approximation the crystal structure analysis indicates isolated Hg(NCO)2 molecules besides K+ and NCO- ions. As in the range of van der Waals radii additional NCO-neighbours are noticed the mercury atoms are surrounded by distorted octahedra. The octahedra around 2/3 of the Hg form infinite chains as in KHg(NCO)3 which are linked together by additional Hg(NCO)2 molecules. Therefore the compound can be formulated as a double salt 2 KHg(NCO)3 • Hg(NCO)2. The vibrational spectrum is discussed. Rb2Hg3(NCO)8 is isotypous while the caesium salt has a double cell volume.

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