BONDS
!
!V(bond) = Kb(b - b0)**2
!
!Kb: kcal/mole/A**2
!b0: A
!
!atom type Kb          b0
!
!gold sulphur section 1

Au  S     198        2.531  
S   C     205        1.836


ANGLES
!
!V(angle) = Ktheta(Theta - Theta0)**2
!
!V(Urey-Bradley) = Kub(S - S0)**2
!
!Ktheta: kcal/mole/rad**2
!Theta0: degrees
!Kub: kcal/mole/A**2 (Urey-Bradley)
!S0: A
!
!atom types     Ktheta    Theta0   Kub     S0
!
gold sulphur section 2

S   C   C      124.28    114 ! ALLOW   ALI SUL ION
Au  S   C      46.347    109 ! ALLOW   ALI SUL ION

DIHEDRALS
!
!V(dihedral) =Kchi (1 + cos(n(chi) - delta))
!
!Kchi : kcal/mole
!n: multiplicity
!delta: degrees
!
!atom types          Kchi   n    delta

S  C  C  C          0.31    2      180
Au S  C  C           .22    2      -19


END