The use of DOSY experiments to determine the solution structures of coinage metal pyrazolates: The case of {[3,5‐(CF3)2Pz]Ag}3

A series of DOSY experiments have been carried out to determine the solution stoichiometry of silver(I) 3,5‐bis (trifluoromethyl)pyrazolate species. This compound exists as a trimer in the solid state (n = 3) but in solutions of chlorinated solvents, the DOSY data suggest the presence of a mixture of solvent stabilized monomer (n = 1) and dimer (n = 2) in equilibrium. Different approximations have been used including the Stokes–Einstein and the Stokes–Einstein–Gierer–Wirtz equations. Some methodological problems are discussed. A study about the determination of solution stoichiometry of silver(I) 3,5‐bis (trifluoromethyl)pyrazolate in solution was performed. A series of DOSY experiments and two approaches have been used to determine the n value of (12Ag)n, all of them showing that, although this compound exists as a trimer in the solid state (n = 3), in solutions of chlorinated solvents is probably present as a mixture of solvent stabilized monomer (n = 1) and dimer (n = 2) in equilibrium.