Files
lammps/examples/amoeba/amoeba_water.prm
2022-07-05 07:11:09 -04:00

161 lines
4.9 KiB
Promela

!! DATE: 2022-07-05 UNITS: real
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## ##
## Force Field Definition ##
## ##
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forcefield AMOEBA-WATER-2003
bond-cubic -2.55
bond-quartic 3.793125
angle-cubic -0.014
angle-quartic 0.000056
angle-pentic -0.0000007
angle-sextic 0.000000022
opbendtype ALLINGER
opbend-cubic -0.014
opbend-quartic 0.000056
opbend-pentic -0.0000007
opbend-sextic 0.000000022
torsionunit 0.5
vdwtype BUFFERED-14-7
radiusrule CUBIC-MEAN
radiustype R-MIN
radiussize DIAMETER
epsilonrule HHG
dielectric 1.0
polarization MUTUAL
vdw-12-scale 0.0
vdw-13-scale 0.0
vdw-14-scale 1.0
vdw-15-scale 1.0
mpole-12-scale 0.0
mpole-13-scale 0.0
mpole-14-scale 0.4
#mpole-15-scale 0.8
polar-12-scale 0.0
polar-13-scale 0.0
polar-14-scale 1.0
polar-15-scale 1.0
polar-12-intra 0.0
polar-13-intra 0.0
polar-14-intra 0.5
polar-15-intra 1.0
direct-11-scale 0.0
direct-12-scale 1.0
direct-13-scale 1.0
direct-14-scale 1.0
mutual-11-scale 1.0
mutual-12-scale 1.0
mutual-13-scale 1.0
mutual-14-scale 1.0
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## ##
## Literature References ##
## ##
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P. Ren and J. W. Ponder, "A Polarizable Atomic Multipole Water Model
for Molecular Mechanics Simulation", J. Phys. Chem. B, 107, 5933-5947
(2003)
Y. Kong, "Multipole Electrostatic Methods for Protein Modeling with
Reaction Field Treatment", Ph.D. thesis, DBBS Program in Molecular
Biophysics, Washington University, St. Louis, August, 1997 [available
online from http://dasher.wustl.edu/ponder/]
alternative valence parameters to match symmetric and antisymmetric
stretch frequencies by David Semrouni, Ecole Polytechnique, Paris
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## ##
## Atom Type Definitions ##
## ##
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atom 1 1 O "AMOEBA Water O" 8 15.995 2
atom 2 2 H "AMOEBA Water H" 1 1.008 1
################################
## ##
## Van der Waals Parameters ##
## ##
################################
vdw 1 3.4050 0.1100
vdw 2 2.6550 0.0135 0.910
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## ##
## Bond Stretching Parameters ##
## ##
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#bond 1 2 529.60 0.9572 !! original AMOEBA water
bond 1 2 556.85 0.9572
################################
## ##
## Angle Bending Parameters ##
## ##
################################
#angle 2 1 2 34.05 108.50 !! original AMOEBA water
angle 2 1 2 48.70 108.50
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## ##
## Urey-Bradley Parameters ##
## ##
###############################
#ureybrad 2 1 2 38.25 1.5537 !! original AMOEBA water
ureybrad 2 1 2 -7.60 1.5537
###################################
## ##
## Atomic Multipole Parameters ##
## ##
###################################
multipole 1 -2 -2 -0.51966
0.00000 0.00000 0.14279
0.37928
0.00000 -0.41809
0.00000 0.00000 0.03881
multipole 2 1 2 0.25983
-0.03859 0.00000 -0.05818
-0.03673
0.00000 -0.10739
-0.00203 0.00000 0.14412
########################################
## ##
## Dipole Polarizability Parameters ##
## ##
########################################
polarize 1 0.837 0.390 2
polarize 2 0.496 0.390 1