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lammps/examples/USER/fep/CH4-CF4/mols/CH4-CF4.ff

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# oplsaa.ff (kJ/mol, A, deg) version 2013/12/07
ATOMS
# type m/uma q/e pot pars
# alkanes JACS 118(1996)11225, JPC 100(1996)18010
C-CF CT 12.011 -0.24 lj 3.50 0.27614
H-D HC 6.008 0.06 lj 2.50 0.12552
HD- HC 6.008 0.00 lj 2.50 0.12552
# perfluoroalkanes JPCA105:4118(2001)
CF-C CT 12.011 0.48 lj 3.50 0.27614
FD- F 18.998 0.00 lj 2.95 0.22175
F-D F 18.998 -0.12 lj 2.95 0.22175
BONDS
# i j pot re/A ka/kJmol-1
# alkanes OPLS-AA JACS 118(1996)11225, JPC 100(1996)18010
HC CT harm 1.090 2845.12
# perfluoroalkanes JPCA105(2001)4118
F CT harm 1.332 3071.1
ANGLES
# i j k pot th/deg ka/kjmol-1
# alkanes JACS 118(1996)11225, JPC 100(1996)18010
HC CT HC harm 107.80 276.14
# perfluorocarbons JPCA105(2001)4118
F CT F harm 109.1 644.3
# special
HC CT F harm 0.0 0.0