Abstract
The infrared and Raman spectra of nicotinium dichromate. (C6H6O2N)2Cr2O7. were recorded and discussed. The most remarkable result of this analysis is the apparent existence of anions with linear Cr-O-Cr bridges in this crystal lattice. The thermal behaviour was investigated by means of TG and DTA measurements. The pyrolysis is very complex and resembles in certain aspects that of (NH4)2Cr2O7 · Cr2O3 is obtained as the only final solid residue.
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