English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Crystals of two new polymorphic forms of the known compound (NaCl)[Cu(HSeO 3 ) 2 ], which we term polymorphs  II  and  III , were formed after a  ca . one-year dwelling of a crystalline precipitate under mother liquor and upon crystallization in the presence of K + , respectively. Both structures belong to the “layered copper hydroselenite” family. The polymorph  II  is a structural analog of (KCl)[Cu(HSeO 3 ) 2 ] with a fully ordered Na +  site; the main difference concerns the environment of Cu 2+  which is more regular in (NaCl)[Cu(HSeO 3 ) 2 ] -II . In contrast to some expectations, crystallization from solutions containing KCl. NaCl, CuCl 2 , and H 2 SeO 3  upon evaporation does not result in formation of mixed (Na 1− x  K   x   Cl)[Cu(HSeO 3 ) 2 ] crystals, but rather in a separate crystallization of (KCl)[Cu(HSeO 3 ) 2 ] and (NaCl)[Cu(HSeO 3 ) 2 ]- III  which exhibits a complex structure with four ordered and one disordered Na +  sites. It is possible that longer crystallization times enhance formation of ordered structures.

zeitschrift für kristallographie - crystalline materials

Synthesis and crystal structure of two novel polymorphs of (NaCl)[Cu(HSeO 3 ) 2 ]: a further contribution to the family of layered copper hydrogen selenites