Potential
model descriptions for alkylsulfonic acids, methanesulfonic,
ethanesulfonic, and propanesulfonic acids, are developed based on
CHARMM and OPLS parameters and protocols. Thermodynamic, structural,
and transport properties of these alkylsulfonic acids, including density,
heat of vaporization, radial and spatial distribution functions, hydrogen
bond structure, shear viscosity, and translational diffusion coefficients,
are examined via molecular dynamics simulations using these potential
models. The results are compared with the predictions of ab initio
molecular dynamics simulations as well as with available experimental
information. A good overall agreement indicates that the force-field
descriptions developed here provide a reliable framework to study
liquid systems containing alkylsulfonic acids.