Studies in Mössbauer spectroscopy. Part VI. Tin-119 spectra of some trichlorostannyl transition-metal complexes

Abstract

The ¹¹⁹Sn-Mössbauer data for some trichlorostannyl complexes of iron(II), ruthenium(II), rhodium(I), iridium(III), platinum(II), copper(I), silver(I), and gold(I) are reported and discussed in terms of the nature of the tin–metal bond. Previously suggested configurations for complexes of the type (Ph₃P)₂Pt(X)SnCl₃(X = Cl and H) have been confirmed by i.r. data, and it has been shown that the red complexes previously thought to contain the trans-[PtCl₂(SnCl₃)₂]^2– and [Pt(SnCl₃)₅]^3– anions have identical Mössbauer and i.r. parameters; it seems likely that the latter formulation is correct. The isomer shifts of all the complexes have been correlated with the Sn–Cl stretching frequencies.