Polyoxometalate constitute a unique clas of inorganic cornpounds duo to structural variety as well as interesting and often unexpected properties in fields as divers as catalysis, medicine and megnetochemistry [1-3]. Ability of lacunary heteropolyanions specially Keggin – type heteropolyanions in reacting with radioactive metal ions and thermal stability and radiation resistant of produced complexces attract attentions to use the species for the separating and stoking radioactive waste [4-0].
