Author:
Chevrier G.,Giester G.,Zemann J.
Abstract
Abstract
In the natrochalcite-type compounds NaCu2(H3O2)(SO4)2 and RbCu2(H3O2)(SeO4)2 the lengths of the two different hydrogen bridges vary widely: 2.44 Å and 2.70 Å in the Na-S member, and 2.60 Å and 3.03 Å in the Rb-Se member. Both structures were refined by single-crystal neutron diffraction methods. Least-squares refinements (harmonic vibrations for all atoms) resulted in a splitting of the H atom positions of the short bridges by 0.265(13) Å in the Na-S member, and by 0.472(6) Å in the Rb-Se member. In the two compounds no clear evidence for an ordering of the split position of the H atom was found.
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science
Cited by
23 articles.
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1. Synthesis and crystal structure of (NH4)[Ni3(HAsO4)(AsO4)(OH)2];Acta Crystallographica Section E Crystallographic Communications;2024-04-26
2. Natrochalcite NaCu2(SO4)2∙H3O2 from the Lavrion Mining District – a brief characterisation;Austrian Journal of Earth Sciences;2024-01-01
3. Saranchinaite, Na2Cu(SO4)2, a new exhalative mineral from Tolbachik volcano, Kamchatka, Russia, and a product of the reversible dehydration of kröhnkite, Na2Cu(SO4)2(H2O)2;Mineralogical Magazine;2018-02-28
4. Evaluation of Low-cost Natrochalcite Na[Cu2(OH)(H2O)(SO4)2] as an Anode Material for Li- and Na-ion Batteries;Electrochimica Acta;2016-09
5. Kaliochalcite, KCu2(SO4)2[(OH)(H2O)], a new tsumcorite-group mineral from the Tolbachik volcano, Kamchatka, Russia;European Journal of Mineralogy;2014-09-03