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Asymmetric and symmetric hydration of hydrated anions in aqueous solution

Eklund, Lars (2011). Asymmetric and symmetric hydration of hydrated anions in aqueous solution. Uppsala : Sveriges lantbruksuniv.
ISBN 978-91-576-9040-1
[Licentiate thesis]

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Abstract

The interaction between solvent and solute is a very important chemical property that has large impact on the chemical reactions taking place. In Paper I and II the structure of hydrated sulfite, selenite and selenate in aqueous solutions are determined and compared. The sulfite is also compared with earlier work and new work has been done to show the difference in symmetric an asymmetric hydration. The first hydration shell of sulfite and selenite has been shown to be asymmetric with large influences on the properties of these ionic aqueous solutions, it is therefore vital that these structures are known. Furthermore, the polyatomic anions studied have been shown to be structure makers, and this greatly affects the thermodynamic properties of the solutions. One can conclude that the series of the solutions, from weakest to strongest structure maker, is selenite < selenate < sulfite < sulfate. This indicates a trend in the hydration behavior of oxoanions where higher oxidation and symmetry leads to stronger structure making behavior in addition to the expected effect generated by increased charge density. In conclusion, the effects of asymmetric hydration can be seen in the ions studied with great effect to the physico-chemical properties of the hydrated ions and the reactions that they are involved in.

Authors/Creators:Eklund, Lars
Title:Asymmetric and symmetric hydration of hydrated anions in aqueous solution
Year of publishing :August 2011
Number of Pages:28
Papers/manuscripts:
NumberReferences
I.Eklund L., Hofer T., Pribil A.,Rode B.M., Person I. (2011). On the Structure and Dynamics of the Asymmetrically Hydrated Sulfite Ion in Aqueous Solution – An ab initio QMCF MD Simulation and Large Angle X-ray Scattering Study. Manuscript
II.Eklund L, Persson I.(2011). Comparative structure studies of sodium selenate and sodium selenite using large angle X-ray scattering and double differentiated FTIR. Manuscript.
Place of Publication:Uppsala
Publisher:Institutionen för kemi, Sveriges lantbruksuniversitet
ISBN for printed version:978-91-576-9040-1
Language:English
Publication Type:Licentiate thesis
Full Text Status:Public
Agris subject categories.:X Agricola extesions > X50 Chemistry
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Physical Chemistry
(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Inorganic Chemistry
(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Theoretical Chemistry
Agrovoc terms:hydration, solutions, chemicophysical properties, sulphites
Keywords:hydration, asymmetric hydration, symmetric hydration, anion, selenite, selenate, sulfate, sulfite, RDF, LAXS, DDIR, ARD, QMCF
URN:NBN:urn:nbn:se:slu:epsilon-e-184
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-184
ID Code:8280
Department:(NL, NJ) > Dept. of Chemistry (until 131231)
Deposited By: Lars Eklund
Deposited On:24 Aug 2011 07:03
Metadata Last Modified:02 Dec 2014 10:46

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