Abstract
Chromium, molybdenum and ruthenium complexes of chloranilic acid (H 2CA) were investigated by the thermogravimetric (TG) technique. The TG plot of Cr(H 2CA) 3 showed three decompositions in the temperature range 336–802°K. On the other hand, the TG plot of MoO 3(HCA) complex displayed successive weight losses in four steps covering the temperature range 350–1278°K. The thermal decomposition of the cluster compound Ru 3(CO) 10(μ-H)(HCA) occurred in three steps within the decomposition temperature range 302–764°K. Calculation of the reaction order of decompositions of the three complexes revealed that they follow first-order kinetics. The thermodynamic parameters for the different decomposition steps of the complexes were also determined from their DTG plots.
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