Par for Fe-sulphur clust; Ulf & Markus 19/1-06 (done:f. const/3 cmd->amber)
MASS
S2 32.06         2.900               sulphide sulphur; from SH
FE 55.85

BOND
FE  SH     83.947      2.282
FE  S2     61.467      2.307


ANGL
SH  FE  S2    30.053     111.97
FE  SH  CT    64.577      99.98
S2  FE  S2    27.483     106.86
FE  S2  FE    31.210      69.85


DIHE
S2   FE   SH   CT   1    0.00     0.00   3.     !    23.01 3 1
SH   FE   S2   FE   1    0.00   180.00   6.     !    24.42 3 2
FE   SH   CT   H1   1    0.00     0.00   3.     !    20.32 1 3
S2   FE   S2   FE   1    0.00     0.00   6.     !    25.23 3 2


NONB
S2          2.0000  0.2500             From SH
FE          1.2000  0.0500             from contrib/heme