Synthesis and Characterization of Thiocyanato-Bridged Heteropolynuclear Chromium(III)-Copper(II) Complexes

• Autorzy: Dobrzańska L. , Wrzeszcz G. , Grodzicki A. , Rozpłoch F.
• Języki publikacji: EN

Abstrakty

EN

Heteropolynuclear thiocyanate-bridged complexes were prepared in the reactions of aqueous solutions of K3[Cr(NCS)6] with copper(II) complexes of the type [CuX4]2+, where X=imidazole (imH), 4-methylimidazole (4-MeimH) and 2X= ethylenediamine (en). Solid products were formulated as (Cu(imH)4)3(Cr(NCS)6)2 *2H2O, (Cu(4-MeimH)4)3(Cr(NCS)6)2 *3H2O and (Cu(en)2)3(Cr(NCS)6)2 *2H2O on the basis of elemental analysis and spectral data (IR,UV-VIS). EPR spectra, variable temperature magnetic susceptibility and thermal properties in air were investigated, indicating that all complexes are polynuclear with thiocyanate bridges, exhibiting Curie-Weiss behavior between 80-300 K. Thermal decomposition is multistage and yields CuO and CuCrO2 as final products.

Słowa kluczowe

EN

chromium(III); copper(II); thiocyanate; heteronuclear complexes; IR; electronic spectra; EPR; magnetic properties; thermogravimetry

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2000
• Tom: Vol. 74, nr 2
• Strony: 199--206

Twórcy

autor

Dobrzańska L.

autor

Wrzeszcz G.

autor

Grodzicki A.

autor

Rozpłoch F.

• Uniwersytet Mikołaja Kopernika Wydział Chemii Gagarina 7 87-100 Toruń