On the relationship between the structures of Cu(II) complexes and their chemical transformations. XVI: Thermal dehydration of some pentacoordinate aquacarboxylato Cu(II) complexes

The thermal dehydration of pentacoordinate complexes [Cu(maleinate)(H 2 O)] (1), [Cu 2 (citrate)(H 2 O) 2 ] (II) and [Cu(phenoxyacetate) 2 (H 2 O) 3 ] (III) was investigated and correlated with the structural changes occurring during the dehydration. It was found that the activation parameters of the reactions do not follow the lengths of the split Cu-OH 2 bonds. The lowest E a and lgA values were found for compound I, the highest ones for compound III. The most expressive changes of the anionic ligand binding mode the place during the dehydration of this compound