Home – Home – Jornals – Journal of Structural Chemistry 2009 number 3

The charged state of the 3d metal ions in layered cation-substituted disulfides CuCr_1-xV_xS₂ was studied by X-ray photoelectron spectroscopy. An analysis of the energy positions and structure of the Cu2p_3/2 and Cr2p_3/2 X-ray photoelectron lines showed that the corresponding polycrystalline samples of CuCr_1-xV_xS₂ contained mixed-valence chromium and copper ions. It was shown that the charged states of chromium and copper ions depended on the concentration of vanadium cations (x). The presence of mixed-valence Cu¹⁺ and Cu²⁺ ions in CuCr_1-xV_xS₂ may be correlated with the crystal structure of the corresponding layered disulfides.