Kinetic analysis of thermogravimetric data. X

A study was made of the thermal decompositions of 22 derivatives of[M(en)₃]X₃ type complexes. Partial de-amination leading to the formation of[M(en)₂X₂]X type complexes occurs in the case ofM=Cr(III) ifX=Cl, Br, I orNCS, but in the case ofM=Co(III) it is possible only ifX=Cl. In other cases redox reactions hinder the formation of stable intermediates. Kinetic parameters were derived for the dehydration of 19 compounds.

The validity of a linear kinetic compensation law was observed. The dependence of the kinetic compensation parameters on the nature of the thermal process is discussed.