Features of thermal dissociation of oxofluoroniobates

Thermal decomposition of double oxofluoroniobates of alkali metals, related to specificity of their crystal structure, was studied by the method of mass-spectrometry. It is shown that compounds, having united octahedrons, MNbOF4 for instance, within their structure, decompose with isolation of NbOF3, and compounds of isle type, like M2NbOF5 ones - with isolation of light components