| Abstrakt: |
The Mössbauer spectra for ethyltin halides and related compounds (Et4Sn, SnX4(X=Cl,Br, I), Et3SnX, Et2SnX2(X=Cl, Br, I), EtSnI3) were obtained. The replacement of ethyl groups by halogen atoms made the isomer shifts more positive relative to the tetraethyltin precursor. These results may be explained in terms of the rehybridization theory that the s-character of a central atom tends to concentrate in orbitals directed toward electropositive substituents. A suggestion that the compounds of RSnX3type show smaller quadrupole splittings than the R3SnX compounds is made and discussed in terms of the rehybridization in the orbitals of the tin atom and in terms of bond ionicity. |
