Abordagem teórico-experimental da teoria do campo cristalino na disciplina de síntese inorgânica

Abstract

Recebido em 25/1/11; aceito em 21/6/11; publicado na web em 8/8/11 THEORETICAL AND EXPERIMENTAL CRYSTAL FIELD THEORY TREATMENT IN THE INORGANIC SYNTHESIS COURSE. We describe herein the synthesis and characterization of the complexes KNiF 3 , [Ni(en) 3 ]I 2 , [Ni(en) 3 ]Cl 2 , [Ni(acac) 2 (H 2 O) 2 ], [Ni(en) 2 (H 2 O) 2 ]Cl 2 and [Ni(NH 3) 6 ](BF 4) 2 (en = ethylenediamine, acac-= acetylacetonate) performed in the inorganic synthesis major course at the Chemistry Institute of UFRGS (Universidade Federal do Rio Grande do Sul). The compounds were characterized by infrared and electronic spectroscopy and the electrolytic conductivity was measured. The parameters 10Dq and B were obtained from the electronic spectra and the nefelauxetic and spectrochemical series were determined. The obtained spectrochemical series was F-< acac-< NH 3 < en and the nefeulaxetic series was en < NH 3 < acac-< F- .