Tin disulfide stuff.

[Andy Holder <AHOLDER { *at * } VAX1.UMKC.EDU>]

 We have recently published a pretty good set of AM1 parameters for tin
  that you can perhaps use to get a start on your problem on the tin
  disulfide stuff:
     Dewar, M. J. S.; Healy, E. F.; Kuhn, D. R.; Holder, A. J. Organomet.
     (1991) Vol. 10, 431.
    Andy Holder
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