An EXAFS spectroscopic study of solvates of copper(I) and copper(II) in acetonitrile, dimethyl sulfoxide, pyridine, and tetrahydrothiophene solutions and a large-angle X-ray scattering study of the copper(II) acetonitrile solvate in solution

The X-ray absorption spectra and EXAFS spectra of acetonitrile, dimethyl sulfoxide, pyridine and tetrahydrothiophene solavated copper(I) ions and the acetonitrile and dimethyl sulfoxide solvated copper(III) ions were measured in solution. The tetrakis(acetonitrile)copper(I) and tetrakis(pyridine)copper(I) ions showed similar structures in solid state solution and contained tetrahedrally coordinated copper(I). The Cu-N bond distances were identical for both species in solid and in solution.