lammps/examples/nb3b/MOH.nb3b.harmonic

22 lines
783 B
Plaintext
Raw Normal View History

# DATE: 2013-06-28 CONTRIBUTOR: Todd Zeitler, tzeitle@sandia.gov CITATION: none
# nb3b/harmonic (nonbonded 3-body harmonic) parameters for various elements
#
# multiple entries can be added to this file, LAMMPS reads the ones it needs
#
# these entries are in LAMMPS "real" units:
# k [kcal/mol/rad^2], theta_0 [degrees], cutoff [Angstroms]
#
# format of a single entry (one or more lines):
# element 1 (central atom), element 2, element 3,
# k_theta, theta_0, cutoff
#
# (ijj)-->determines cutoff for i-j distance
# (jik)-->determines k, theta_0 for i-j-k angle term
#
# ielem jelem kelem k theta_0 cutoff
O M M 0.00 0.00 2.80
O H H 0.00 0.00 1.20
O M H 6.35 120.00 0.00
O H M 6.35 120.00 0.00