论文部分内容阅读
The macrocyclic ligand complex, [Co(C_(18)H_(18)N_6) Br_2]·1/2H_2O, has been synthesized by the template condensation of 2, 6-diacetylpyridine with hydrazine in the presence of cobalt (Ⅱ) dibromide and characterized by IR, ESR, electronic spectra and magnetic properties. Based on these data, the complex is proposed to be an approximate elongated octahedron with low spin state. The absorption bands of d-d transition are assigned, and the values of various ligand field parameters have been evaluated and are discussed in terms of their chemical utilities. ESR study on the complex has been carried out. The values of g(?)and g(?) have been determined. From ligand field parameter values and gvalues, μ_(eff)=2.06 BM has been obtained, which is consistent with the experimental value(2.04BM).
The macrocyclic ligand complex, [Co (C_ (18) H_ (18) N_6) Br_2] · 1 / 2H_2O, has been synthesized by the template condensation of 2, 6- diacetylpyridine with hydrazine in the presence of cobalt (II) dibromide and characterized by IR, ESR, electronic spectra and magnetic properties. Based on these data, the complex is proposed to be approximate elongated octahedron with low spin state. The absorption bands of dd transition are assigned, and the values of various ligand field parameters have have evaluated and are discussed in terms of their chemical utilities. From ligand field parameter values and gvalues, μ_ (eff) = 2.06 BM has been obtained, which is consistent with the experimental value (2.04 BM).