CsNbOB2O5: the Basic Structure Type of the Borates AMOB2O5 (A = K, Rb, Cs, Tl; M = Nb, Ta)
作者:P. Becker、L. Bohatý、R. Fröhlich
DOI:10.1107/s0108270195002617
日期:1995.9.15
A new anhydrous berate, CsNbOB2O5 (caesium niobatodiborate), has been found in the ternary system CS2O-Nb2O5-B2O3. The compound belongs to the already known AMOB(2)O(5) family (originally reported as AMB(2)O(6)) with A = K, Rb, Cs, Tl; M = Nb, Ta. These published members exhibit superstructures, the length of the superperiod depending on the chemical composition A and M. The structure of CsNbOB2O5 reported here has the smallest possible unit cell and represents the basic structural type for the family.