Mössbauer Spectroscopic Studies of Bromostannate(II) Complexes in Frozen Aqueous Solutions

Mössbauer spectra of KSnBr₃·2H₂O were very broad and could not fit Lorentz equation, suggesting unresolvable quadrupole doublets. Its quadrupole splitting was estimated to be about 0.25 mm/s from the separate experiments on frozen aqueous solutions of Sn(II)-Br^? systems. Stability constants of bromostannate(II) complexes were determined at μ = 3.5 from the Δ-c_L curve by the approximation method, which were in agreement with the literature values.