solvate

In physical chemistry, a term suggested to denote supposed compounds of one or more molecules of a solvent either with the ions or with the un-dissociated molecules of a dissolved substance: if the solvent is water, these compounds are called hydrates.

A complex formed by the attachment of solvent molecules to that of a solute

To form such a complex upon solution

cause a solvation in (a substance)

a compound formed by solvation (the combination of solvent molecules with molecules or ions of the solute)

undergo solvation or convert into a solvate