I want to simulate Pt interaction with water molecules using the following equation:
The parameters for Pt-H and Pt-O interaction shown in the following table:
I only found Morse potential in Lammps have the similar format, does anybody know how to fit this long equation into lammps? Many Thanks!
 Pinto, Leandro M. C., Paola Quaino, Mauricio D. Arce, Elizabeth Santos, and Wolfgang Schmickler. ChemPhysChem 15, no. 10 (July 21, 2014): 2003–9. doi:10.1002/cphc.201400051.