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


 Compound UV-vis data (nm)

MeOH CH2Cl2

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