Fig. 2: Three approached for determining and describing molecular structure.

Determining molecular structure Q and symmetry point group G of methane and chloroform either using polyhedral P with the (a). CSM, b CShM or symmetry with c CSoM. CSM provides S-values, CShM provides σideal-values and CSoM provides σsym-values as deviations from ideal fit to P or the symmetry G. Atom legend: carbon = brown, hydrogen = pink, chlorine = green.