PREPARATION AND REACTIVITY OF METAL-CONTAINING MONOMERS .34. THERMAL-STABILITY AND REGULARITIES OF TRANSFORMATIONS OF [FE3O(CH2=CHCOO)6-CENTER-DOT-3H2O]OH

The thermal decomposition of iron (III) acrylate, [Fe3O(CH2=CHCOO)6 . 3H2O]OH (FeAcr), a monomer with a complex cluster cation, has been stu died at 200-370-degrees-C. Thermal transformations of FeAcr occur in t wo temperature regions. The rates of gas evolution in the low temperat ure region (200-300-degrees-C) and the high temperature region (300-37 0-degrees-C) are described by first-order equations with k = 4.2 . 10( 21)exp[-59000/(RT)] s-1 and k = 1.3 . 10(6)exp[-30500/(RT)] s-1, respe ctively. A study of the qualitative and quantitative composition of th e products of FeAcr thermolysis was carried out. The thermal transform ation of FeAcr is a complex process of dehydration, degradation, and p olymerization in the solid phase followed by decarboxylation of the me tal-carboxyl groups of the polymer.