ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Potentiometric and conductometric studies of cupric chloride and cupric bromide in acetone

Z. Kompišová and J. Gažo

Slovak Technical University, Bratislava

Abstract: The systems CuCl₂.2H₂O-LiCl-Me₂CO Cu(NO₃)₂.3H₂O-LiCl-Me₂CO, Cu(ClO₄)2.6H₂O-LiCl-Me₂CO,Cu(NO₃)₂.3H₂O-LiBr-Me₂CO, and Cu(ClO₄)₂.6H₂O-LiBr-Me₂CO were studied with the potentiometric and conductometric methods and with spectrophotometric measurements. It was detd. that the potentiometric titrn. curves of the systems contg. NO₃^- are different from the other systems, which indicates that the NO₃^- enters into the inner sphere of the Cu(II) complex. The stability of the Cu(II)-ligand bond decreases in this order: Cu(II)-Cl^-, Cu(II)^-NO₃^-, Cu(II)-ClO₄^- and Cu(II)^-acetone. From the potentiometric and spectrophotometric data, the formation of complex ions of CuCl₄^2- and of CuBr₄^2- was detd. with the same ratio of Cu to Cl or Br; [Cu(II)]:[Cl^-] or [Cu(II)]:[Br^-] = 1.3 and 1.4.

Full paper in Portable Document Format: 202a105.pdf (in Slovak)

Chemical Papers 20 (2) 105–114 (1966)