“…The use of volatile U(OMe)6 for uranium isotope separation/enrichment via IR laser-induced multiphoton excitations has received much attention. [77][78][79][80][81][82] The key molecular requirements for any efficient laser-induced isotope separation process employing polyatomic molecules include (i) volatility, (ii) the existence of an infrared-active normal vibrational mode that exhibits a nonzero isotope shift and absorbs in a spectral region corresponding to the output of an efficient laser system, (iii) the absence of interfering ligand absorptions, (iv) the ready synthesis of large quantities of the target molecule, (v) the facile separation and recycling of enriched and depleted material, and (vi) the absence of undesirable photochemical side reactions.…”