Complexation behaviour of copper (II) ion with thiuram disulphide in non-aqueous solvents

摘要

The complexation equlibria between copper(II)-nitrate and tetramethylthiuram disul- phide (tmtd) in dioxane and acetone solutions were studied by UV-vis. Spectrophotometry. Applying the non-linear least squares method, the following complexes with their respective Stability constants, log β±σ), were found to give the best fit to the experimental data: In dioxane in acetone [Cu(tmtd)]~0 5.07±0.02 4.94±0.04 [Cu_2(tmtd)]~2+ 8.38±0.04 9.10±0.06 Copper (II)-chloride and tmtd in dioxane solutions form the complex [Cu4(tmtd)_2]~4+ with the Stability constant 19.1±0.1. The copper (II)-tmtd complexes were characterized by clemental Analysis, TCL and IR spectroscopy. The structures of the complexes are discussed.