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2004
Structure
D 2000
48- 011
Alkali Scandium Arsenates. Part 1. The Framework Structures of KSc(HAsO4)2
and RbScAs2O7. — The structures of KSc(HAsO4)2 (monoclinic, space group C2/c,
Z = 4) and RbScAs2O7 (monoclinic, P21, Z = 4) are determined by single crystal XRD.
Both compounds are characterized by three-dimensional octahedral-tetrahedral frameworks, with intersecting tunnels hosting the alkali atoms. KSc(HAsO4)2 represents a
new structure type, while RbScAs2O7 is the first reported diarsenate that is isotypic with
KAlP2O7. — (SCHWENDTNER, K.; KOLITSCH*, U.; Acta Crystallogr., Sect. C:
Cryst. Struct. Commun. 60 (2004) 9, i79-i83; Inst. Mineral. Kristallogr., Univ. Wien,
A-1090 Wien, Austria; Eng.) — Schramke
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