| Popis: |
Anionic oxomolybdenum(VI) oxalates having the general formula A 2 [Mo 2 O 6 (C 2 O 4 )], where A = K + and NH + 4 , are prepared and characterized by chemical analysis and IR spectra, and their thermal decomposition studied using TG and DTA techniques. Both the compounds are anhydrous and the decomposition of oxalate takes place in a single step. The ammonium compound decomposes between 255 and 320°C to give MoO 3 as the end product, while the potassium compound decomposes between 300 and 380°C to give K 2 Mo 2 O 7 as the end product. Both the products were characterized by chemical analysis, IR and X-ray studies. The X-ray diffraction patterns of the two oxalato complexes confirm that they are crystalline compounds. |
