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Title: High-Pressure Synthesis and Structure Determination of K6(SeO4)(SeO5), The First Potassium Orthoselenate(VI)

The authors report on the first synthesis of a potassium orthoselenate(VI), K{sub 6}(SeO{sub 4})(SeO{sub 5}), and the structure determination from synchrotron powder diffraction data. The title compound crystallizes in the tetragonal space group P4{sub 1}2{sub 1}2 with a = 8.1259(1) {angstrom}, c = 17.4953(2) {angstrom}, V = 1155.21(2) {angstrom}{sup 3}, and Z = 4. Selenium displays two different complex anions, tetrahedral SeO{sub 4}{sup 2-} and trigonal-bipyramidal SeO{sub 5}{sup 4-}. When the formula is reduced to A{sub 3}B, the spatial arrangement of the constituting building units can be derived from the Li{sub 3}Bi type of structure.
Authors:
; ;
Publication Date:
OSTI Identifier:
930180
Report Number(s):
BNL--80841-2008-JA
Journal ID: ISSN 0020-1669; INOCAJ; TRN: US0806714
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Inorganic Chemistry; Journal Volume: 45
Research Org:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org:
Doe - Office Of Science
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ANIONS; BUILDINGS; DATA; DIFFRACTION; POTASSIUM; POWDERS; PRESSURE RANGE MEGA PA 10-100; SELENIUM; SPACE GROUPS; SYNCHROTRONS; SYNTHESIS; UNITS national synchrotron light source