Abstract:
The object of research is the crystal structure of the phase of K3VF6 compound. From the analysis of the literature it
follows that there are three modifications of this compound – the phase, the phase and the phase. There are also several
methods for preparing this compound. One of the problem areas is the existence of a large number of diffraction spectra obtained
with the Bragg-Bertrand survey geometry in the PDF-2 database for 2004. There is also no complete data on the crystal structure of
this compound. A structural model is proposed for the diffraction spectrum of the compound under the number 00-037-0738.
The study used the PDF-2 database for 2004. As well as the HighScorePlus program, which allows to refine the microstructural
parameters of the structural model by the Rietveld method.
As a result, it is found that this diffraction spectrum of the compound under study can correspond to the following structural
model: tetragonal system with lattice periods a=12.3524(4) Aº; b=12.3524(4) Aº; c=16.7447(7) Aº. A possible spatial symmetry group
is I41/a (88).
Analyzing the obtained results, it can be assumed that the studied structure of the phase of the compound crystallizes in
its own structural type.
