The spectral and structural studies revealed that copper(II) in 1 and 2 adopted square pyramidal
geometry, whereas in 7 a square planar geometry. On the other hand in trinuclear complex 3 one copper(II)
adopted square planar, while other two square pyramidal geometry. In their cyclic voltammograms,
1–6 exhibited an irreversible oxidation and two reduction waves whereas 7 and 8 displayed
one oxidation and reduction wave. Variable temperature magnetic susceptibility measurements suggested
paramagnetic nature of the complexes 1–3. T