Dear Steve,
Thanks for your response.
I also tried "angle_coeff 1 bb 14.5320267686 1.0 1.0 # Ebb: bb, M, r1 r2; M in the unit of Kcal/mole", from the unit mdyn/Angstrom to kcal/mole.
But still give me the “ERROR on proc 0: Bond atoms 973 975 missing on proc 0 at step 36 (…/neigh_bond.cpp:65)”.
Best,
Zhu