Home About Browse Search
Svenska


Speciation and structure of tin(II) in hyper-alkaline aqueous solution

Bajnóczi, Éva G. and Eszter, Czeglédi and Ernő, Kuzmann and Zoltán, Homonnay and Szabolcs, Bálint and György, Dombi and Péter, Forgo and Ottó, Berkesi and István, Pálinkó and Gábor, Peintler and Pál, Sipos and Ingmar, Persson (2014). Speciation and structure of tin(II) in hyper-alkaline aqueous solution. Dalton Transactions: an international journal of inorganic chemistry [incorporating Acta Chemica Scandinavica]. 43:48, 17971–17979
[Journal article]

[img]
Preview
PDF
654kB

Abstract

The identity of the predominating tin(II)-hydroxide complex formed in hyper-alkaline aqueous solutions (0.2 <= C-NaOH <= 12 mol dm(-3)) is determined by potentiometric titrations, Raman, Mossbauer and XANES spectroscopy, supplemented by quantum chemical calculations. Thermodynamic studies using a H-2/Pt electrode up to free hydroxide concentrations of 1 mol dm(-3) showed the presence of a single monomeric complex with a tin(II) : hydroxide ratio of 1 : 3. This observation together with Raman and Mossbauer spectroscopic measurements supplemented by quantum mechanical calculations proved that the predominating complex is [Sn(OH)(3)](-), and that the presence of the other possible complex, [SnO(OH)](-), could not be proven with either experiments or simulations. The structure of the trihydroxidostannate(II) complex, [Sn(OH)(3)](-), was determined by EXAFS and was found to be independent of the applied hydroxide and tin(II) concentrations. The mean Sn-O bond distance is short, 2.078 angstrom, and in very good agreement with the only structure reported in the solid state. It is also shown that at pH values above 13 the speciation of the predominant trihydroxidostannate(II) complex is not affected by the presence of high concentrations of chloride ions.

Authors/Creators:Bajnóczi, Éva G. and Eszter, Czeglédi and Ernő, Kuzmann and Zoltán, Homonnay and Szabolcs, Bálint and György, Dombi and Péter, Forgo and Ottó, Berkesi and István, Pálinkó and Gábor, Peintler and Pál, Sipos and Ingmar, Persson
Title:Speciation and structure of tin(II) in hyper-alkaline aqueous solution
Series/Journal:Dalton Transactions: an international journal of inorganic chemistry [incorporating Acta Chemica Scandinavica] (1477-9226)
Year of publishing :2014
Volume:43
Number:48
Page range:17971–17979
Number of Pages:9
Publisher:Royal Society of Chemistry
ISSN:1477-9226
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
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 > Inorganic Chemistry
Agrovoc terms:chemistry, tin
Keywords:hyper-alkaline aqueous solution, tin(II), speciation, structure
URN:NBN:urn:nbn:se:slu:epsilon-e-2549
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2549
Additional ID:
Type of IDID
Web of Science (WoS)000345453700015
DOI10.1039/c4dt02706j
ID Code:12025
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Chemistry and Biotechnology (140101-161231)
Deposited By: SLUpub Connector
Deposited On:09 Apr 2015 09:56
Metadata Last Modified:10 Feb 2016 06:33

Repository Staff Only: item control page