Thermochemistry of copper(II) ion solvation in aqueous organic solvents

Laser-induced copper deposition from aqueous and aqueous–organic solutions: state of the art and prospects of research

“…Investigations of the thermodynamics of transfer processes demonstrated that the Gibbs free energy of the transfer is positive and negative in the case of weaker and stronger donor organic solvents, respectively, 46,90,91 compared with water, which is attributed to the difference in the solvation energy of copper ions. Based on the electronic absorption spectroscopy data, Borina 92 showed that oxygen-containing solvents (weaker s-donors than water) preferably occupy axial positions in the copper coordination polyhedron.…”

“…This is in complete agreement with the experimental data on the topology and electrical conductivity of copper deposits obtained by laserinduced reduction. 47,48,90 As mentioned above, the use of organic solvents should be favourable for the reduction of copper. However, aqueous solutions undoubtedly have considerable advantages, such as low cost, the ease of regeneration and environmental safety.…”