Tarik made a very detailed but (in  my opinion) valid for a very specific application. If you need to apply a simple solvation  model like PCM, you may use a "surrogate" solvent, that is, a solvent with similar polarity, polarizability and basicity parameters. The problem is that dioxane may adopt a polar conformation (boat) in the presence of a strong dipole, changing a little its properties. It has also a specific quadrupolar moment. The solvent effect is highly dependent on the solute you are studying.

thanks for everything I'll try all and hope give me good result.