Quaternary Selenidogermanates(IV) A<sub>3</sub>[AgGe<sub>4</sub>Se<sub>10</sub>]·2H<sub>2</sub>O and A<sub>2</sub>[MnGe<sub>4</sub>Se<sub>10</sub>]·3H<sub>2</sub>O (A = Rb, Cs) with Open Framework Structures
Abstrak
Abstract Hydrothermal reaction of Ge and Se with Ag(CH3COO) in the presence of alkali metal carbonates affords the open framework selenidogermanates(IV) A3[AgGe4Se10]·2H2O (A = Rb, Cs), 1 and 2, which contain corner linked adamantane-like Ge4Se10 cages and AgSe4 tetrahedra. The analogous reaction with Mn(CH3COO)2 yields the isostructural tetragonal compounds A2[MnGe4Se10]·3H2O (A = Rb, Cs), 3 and 4. The cations are sited at a general position in the channels of the silver bridged anionic framework of 1 and 2 and exhibit a disordered pattern of occupation (s.o.f. = 0.75) with one of the two crystallographically independent water oxygen atoms O(2) (s.o.f. = 0.25). In contrast, the Rb+ cations in 3 are disordered over all three cation/oxygen sites, and the cation/water occupation pattern is fully reversed for the larger Cs+ cations in 4 in comparison to 1 and 2.
Penulis (2)
Anja Loose
William S. Sheldrick
Format Sitasi
Akses Cepat
- Tahun Terbit
- 1997
- Bahasa
- en
- Total Sitasi
- 29×
- Sumber Database
- CrossRef
- DOI
- 10.1515/znb-1997-0604
- Akses
- Terbatas