Table 4: The UV-vis data of HL and its complexes.


 Compound UV-vis data (nm)

MeOH CH2Cl2

 HL 232 (π–π∗), 325 (n–π∗), 440 (CT) 230 (π–π∗), 328, 455 (CT)
 [Co(L)2(H2O)2] 233 (π–π∗), 310 (n–π∗) 230 (π–π∗), 300 (n–π∗)
 [Cu(L)(H2O)]CH3COO 225 (π–π∗), 254 (π–π∗), 334 (n–π∗) 231 (π–π∗), 260 (π–π∗), 335 (n–π∗)
 [Zn(L)(H2O)]CH3COO 229 (π–π∗), 253 (π–π∗), 330 (n–π∗) 230 (π–π∗), 260 (π–π∗), 320 (n–π∗)
 [Pd(HL)Cl2] 234 (π–π∗), 310 (n–π∗) 245 (π–π∗), 283 (n–π∗)