Resumo

SEGUEL, GLORIA V; RIVAS, BERNABÉ L  e  ORDENES, PEDRO. SYNTHESES AND CHARACTERIZATIONS OF COPPER COMPLEXES: INTERACTION OF COPPER ACETATE DIHYDRATE WITH 4,4´-BIPYRIDINE. J. Chil. Chem. Soc. [online]. 2015, vol.60, n.3, pp.3080-3082. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072015000300022.

Two complexes have been synthesized through the reaction of copper(II) acetate dihydrate with 4,4´-bipyridine. Both were characterized by elemental analysis, magnetic moment, FT-IR spectroscopy, and thermogravimetric analysis. Semiempirical structural DFT studies of [Cu₂(CH₃COO)₄(4,4.bipy)₂]_nand 4,4´ bipyridine were carried out. 4,4´-Bipyridine acts as bidentate ligand, breaking the Cu₂(CH₃COO)₄ unit and acting as bridge between the metal centers, yielding a polymeric structure bearing monodentate acetate groups. The compounds [Cu₂(CH₃COO)₄(4,4-bipy)₂]_n and [Cu₂(CH₃COO)₄(4,4-bipy)₂(H₂O)₂]_n have magnetic moments of 1.83 and 1.77 B.M, respectively. These values are higher than those of copper (Il) acetate monohydrate (1.4 B.M).

Palavras-chave : metallic acetates; 4,4´-bipyridine; DFT calculations.

        · texto em Inglês     · Inglês ( pdf )