3.4. Electronic Absorption Spectra and Magnetic
Moments of the Metal Complexes
The Uv-vis spectrum of the ligand showed two bands at
330 and 370 nm which are assigned to π-π
*
and n-π
*
,
transition, respectively. The Uv-vis spectra of 10
–4
M of
the metal complexes, Figure 2, display similar absorption spectra of the ligand which are shifted to lower and higher wavelengths beside a decrease or disappearance
of the peak dye to n-π
*
transition which confirm the co-
ordination through azomethine nitrogen. On the other hand,
π-π
*
transition showed shoulder at 337 nm with new
band at 320 nm due to complexation. Also the d-d transition in this type of complexes may appear above 500 nm
but does not appear due to the low intensity of the d-d
transition. The data listed in Table 1summarized the
measured magnetic moment values. These data support the
octahedral geometry of the complexes.