A Dinuclear Uranium Complex [{UO2F2(NH3)}2(μ‐F)2]2– from Reaction of TlF and UO2F2 in anhydrous Ammonia and Fluoride Ion Affinities for some Uranyl(VI) Species [UO2F x ]2–xand [UO2F x (NH3)5–x]2–x

UO2F2 abstracts F– anions from TlF in liquid ammonia solution and the compound [Tl2(NH3)6][{UO2F2(NH3)}2(μ-F)2] is formed. The has been characterized by single crystal X-ray diffraction, Raman spectroscopy quantum-chemical calculations for solid state. Quantum-chemical investigation of [{UO2F2(NH3)}2(μ-F)2]2– anion showed that U–(µ-F)–U σ-3c-4e-bond essentially ionic. [Tl2(NH3)6]2+ cation shows a thallophilic Tl∙∙∙Tl interaction. Fluoride ion affinities (FIAs) were calculated different UO22+ species [UO2Fx]2–x [UO2Fx(NH3)5–x]2–x with x = 0 to 4.