I am looking to investigate the relation between experimental enthalpies of solution and theoretical enthalpies of solution calculated using theoretical equations for the lattice enthalpy and hydration enthalpy for ionic salts. I read that because of the covalent nature of ionic salts with a lower difference in electronegativity, the experimental lattice enthalpy of these salts is actually greater than would be expected theoretically. Would this be worth investigating?
To investigate this, I am looking for public databases with data for the solution enthalpy and ionic radii of ionic salts however I cannot find any other than the CRC handbook for physics and chemistry (and only the 85th version; would it be better to get a more recent version or should these data be the same in more recent versions?). I would like to use more than one database so could someone please let me know of any other public databases with these data?