Bis(diselenocarbamato)copper(ii) Complex. Some Peculiarities in Synthesis, Electronic Structure, Thermal and Photochemical Reactions as Studied by Epr and Electronic Spectroscopy

The paper is a review on the present data about the structure, properties and reactivity of bis(diselenocarbamato)copper(II), Cu(dsc)2, complexes which are significantly different form the remaining chelates with chromophores CuO4, CuN4 and CuS4 known up to now. The marked differences of Cu(dsc)2 are attributed to its specific electronic structure with dominating donor properties of the ligands atoms in the chromophore CuSe4 and strongly suppressed acceptor properties of Cu(II). As a result its reaction products are unpredictable on the basis of the present knowledge on the other copper(II) chelates. These facts, as well as the very limited number of studies on Cu(dsc)2 suggest that the complex could be considered as a challenge for future investigations in the field of coordination chemistry.