ABSTRACT
Based on numerous experimental data, it was found in earlier works that copper(I) and silver(I) form pseudo-halide complexes of anionic nature. Namely, it was shown that tetrasubstituted arsonium salts precipitate copper(I) and silver(I) in the form of [R4As][MX2 ] salts, where M = Cu or Ag; X = SCN or CN and R is an organic radical and varies within a very wide range. Such composition of the synthesized substances does not contradict the literature data. As it is known that in such compounds, copper and silver also “lose” ns-valence electrons thus releasing ns-orbital. This orbital and one orbital of the np-sublevel becomes the basis for “settling” the pseudo halogen groups and at this time they undergo sp-hybridization. Thus, we can conclude that the [MX2 ]– -anion should have a linear structure [1], although the mentioned complexes have not yet been investigated in this respect.
