Comments on transitions in bulk tetramethyltin Sn(CH3)4 and as adsorbate on a (0001) graphite plane

In the case of tetramethyltin, whether in bulk form or in the form of an adsorbate on (0001) graphite basal plane, it was found that anomalies in the Mössbauer or X-ray diffraction parameters occur at similar temperatures, viz: 83 K, 95 K, and 125 K. It is therefore suggested that these anomalies can be associated in some way with intramolecular rearrangements and be affected by intramolecular motions.Sponsored by the U.S.-Israel Binational Science Foundation