K{sub 3}Nb{sub 5}GeO{sub 16} {center_dot} 2H{sub 2}O, a new hydrated potassium niobium germanate containing a two-dimensional channel network
- Univ. of Houston, TX (United States)
- Univ. of California, Santa Barbara, CA (United States)
The authors report the high-pressure/high-temperature hydrothermal synthesis and single crystal structure of K{sub 3}Nb{sub 5}GeO{sub 16} {center_dot} 2H{sub 2}O, a new hydrated potassium niobium germanate. K{sub 3}Nb{sub 5}GeO{sub 16} {center_dot} 2H{sub 2}O consists of a three-dimensional network of edge- and corner-sharing NbO{sub 6} and GeO{sub 4} groups, enclosing large, intersecting channels in the [001] and [010] directions, where the guest cations and water molecules are located. K{sub 3}Nb{sub 5}GeO{sub 16} {center_dot} 2H{sub 2}O is briefly compared with other known alkali-metal niobium germanates and related phases. Crystal data: K{sub 3}Nb{sub 5}GeO{sub 16} {center_dot} 2H{sub 2}O, M{sub r} = 946.44, orthorhombic, space group Pmma (No. 51), a = 7.5265(8) {angstrom}, b = 10.4258(9) {angstrom}, c = 10.7692(9) {angstrom}, V = 845 {angstrom}{sup 3}, Z = 2, R(F) = 5.69%, and R{sub w}(F) = 5.59% [1350 observed reflections with I > 3{sigma}(I)].
- OSTI ID:
- 75766
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 115; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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