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Interaction of dode...
Interaction of dodecaborate cluster compounds on hydrophilic column materials in water
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- Fan, Ping (författare)
- Department of Chemistry, University of Bremen AND School of Engineering and Science, Jacobs University Bremen, Germany
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- Neumann, Jennifer (författare)
- Center for Environmental Research and Sustainable Technology, University of Bremen, Germany
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- Stolte, Stefan (författare)
- Center for Environmental Research and Sustainable Technology, University of Bremen, Germany
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- Arning, Jürgen (författare)
- Center for Environmental Research and Sustainable Technology, University of Bremen, Germany
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- Ferreira, Denise (författare)
- Uppsala universitet,Institutionen för kemi - BMC
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- Edwards, Katarina (författare)
- Uppsala universitet,Analytisk kemi
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- Gabel, Detlef (författare)
- Department of Chemistry, University of Bremen AND School of Engineering and Science, Jacobs University Bremen, Germany
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(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- Engelska.
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Ingår i: Journal of Chromatography A. - : Elsevier BV. - 0021-9673 .- 1873-3778. ; 1256, s. 98-104
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The interaction of a series of dodecaborate cluster compounds B12X122− and B12X11Y2− (X = H, Cl, Br, I and Y = SH, OH, NR3) with hydrophilic column materials (Superdex 200, Sepharose 4B, Sephadex G-50, Sephadex G-100, alumina, silica gel and anion exchange material) was studied. Almost all the dodecaborate cluster compounds were retained strongly on Superdex 200. The halogenated cluster compounds interacted with Sepharose 4B, Sephadex G-50, Sephadex G-100 and alumina; on alumina, also the non-halogenated clusters were retained. Silica gel showed the least interaction with all compounds. The thermodynamic parameters were investigated for a selection of compounds on Superdex 200 and Sephadex G-100. Values for ΔH° were found to be negative on both gels. As the change in entropy ΔS° was also negative, it compensated ΔH° to a large extent. The clusters interacted also strongly with anion exchange material in ion chromatography; the interaction decreased with increasing acetonitrile concentration, implying a large contribution from solvent effects.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Liquid chromatography
- Weakly coordinating ions
- Sephadex
- Superdex
- Boron cluster
- Thermodynamics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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