SYNTHESIS, THERMAL-BEHAVIOR AND CRYSTAL-STRUCTURE OF THE TRIHYDRATED COPPER (II) 5-SULFONIC-8-QUINOLINOLATO COMPLEX (FORM-I)

The structure of the trihydrated copper(II) 5-sulfonic-8-quinolinolato complex (form I) is made of alternated layers {2 0 0} of two different kinds. In the first slice, molecules are arranged as dimer-units, each of them held by H-bonds. The copper atom is (4+2) coordinated. The second slice is built of an H-bonded association of one-dimensional polymers parallel to the b axis. The copper atom is (4+1) coordinated. These two slices are held together by a complex network of H-bonds which involves the sole non-coordinating water molecule. Dehydration and rehydration processes of all derivative phases are studied and partly explained by this structure.