  Nuclear inelastic scattering (NIS) of synchrotron radiation has been used to
investigate the dynamics of tin ions chelated by DNA. Theoretical NIS spectra
have been simulated with the help of density functional theory (DFT)
calculations using 12 models for different binding sites of the tin ion in
(CH3)Sn(DNAPhosphate)2. The simulated spectra are compared with the measured
spectrum of the tin-DNA complex.
