Table 4 Electronic spectra transitions and magnetic moment of the H₂L and its complexes

H₂L

46,510 (π→π*)_Ar; 30,300 (π→π*)_C=X; 21,740 (n→π*)_C=X

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Cu(II)

46,510 (π→π*)_Ar, 29,850 (π→π*)_C=X; 25,316 (n→π*)_C=X; 23,256 (LMCT); 15,270 (²T→²E)

2.17

Co(II)

46,510 (π→π*)_Ar; 29,850 (π→π*)_C=X; 25,315 (n→π*)_C=X; 22,990 (n→π*)_C=N*; 19,415 (LMCT); 16,395 (⁴T_1g(F)→⁴T_1g(P) (υ₃)); 14,525 (⁴T_1g(F)→⁴A_2g(P) (υ₂))

5.16

Ni(II)

46,510 (π→π*)_Ar; 29,850 (π→π*)_C=X; 25,315 (n→π*)_C=X; 19,610 (LMCT); 15,505 (³T₁(F)→ ³T₁(P) (ν₃)

3.39

Zn(II)

46,510 (π→π*)_Ar; 29,850 (π→π*)_C=X; 25,315 (n→π*)_C=X; 23,256 (n→π*)_C=N*; 19,610 (LMCT)

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