Table 4: Microanalytical data, magnetic moment, molar conductance and electronic spectral data of the prepared ternary complexes.
 Complexes M.Wt. Color M.P. (°C) Found (Calcd.) % μeff/B.M. ΛMa λmax/cm−1 CT
 Empirical formula C H N
 [Co(DPA)(CBDC acid)] 371.9 purple Above 300 51.6 4.0 11.2 4.15 15.9 16,168 23,072
 C16H15N3O4Co (51.9) (4.1) (11.4)
 [Co(DPA)(malonate)] 367.9 purple 228 42.4 4.0 11.4 4.31 20.8 16,210 23,345
 (H2O)2C13H15N3O6Co (42.8) (4.3) (11.3)
 [Co(DPA)(oxalate)] 335.9 purple 294 42.2 3.2 12.5 4.52 17.1 15,844 23,311
 (H2O)C12H11N3O5Co (42.3) (3.1) (12.3)
 [Co(DPA)(succinate)] 363.9 purple 280 46.1 4.1 11.5 4.31 16.3 15,723 23,099
 (H2O)C14H16N3O5Co (46.3) (4.2) (11.3)