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Synthesis Methods f...
Synthesis Methods for Ce(CrO4)2 · xH2O and Crystal Structures of K2CrSO7, (NH4)2Cr2O7 and Na2Cr2O7 · 2H2O
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Casari, Barbara M. (author)
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- Eriksson, Annika, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Langer, Vratislav, 1949 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Zeitschrift für Naturforschung - Section B Journal of Chemical Sciences. - 0932-0776. ; 62b:6, s. 771-777
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Abstract
Subject headings
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- New and quick methods to synthesize Ce(CrO4)2 · 2H2O and Ce(CrO4)2 · H2O, giving high yields,are described. The methods are based on exchange reactions by refluxing in water or on solid statereactions. The first crystal structure containing a chromatosulfato ion is presented. K2CrSO7 belongsto space group P21/n with a=7.4024(1), b=7.3908(1), c=12.9883(2) Å , β=90.021(1)◦ and Z = 4.The CrSO72− ion, consisting of one chromate group sharing one oxygen atom with one sulfate group, has a pseudo syn-C2v conformation with eclipsed oxygen atoms. K2CrSO7 forms a three dimensional network of CrSO72− ions held together by the charge balancing potassium ions, with the generalstructural features common with dichromate-like structures. The redetermination of the structures of(NH4)2Cr2O7 (space group C2/c, with hydrogen atoms located) and Na2Cr2O7 · 2H2O (space group P21, with hydrogen atoms located and the absolute structure established) are reported.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- Single Crystal X-Ray Diffraction
- Chromatosulfate
- Dichromates
- Oxidizing Agents
- Hydrated Cerium Chromates
Publication and Content Type
- art (subject category)
- ref (subject category)
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