1286709-29-2Relevant articles and documents
A general and modular synthesis of monoimidouranium(IV) dihalides
Jilek, Robert. E.,Spencer, Liam P.,Kuiper, David L.,Scott, Brian L.,Williams, Ursula J.,Kikkawa, James M.,Schelter, Eric J.,Boncella, James M.
, p. 4235 - 4237 (2011/06/19)
The conproportionation reaction between the dimeric diimidouranium(V) species [U(NtBu)2(I)(tBu2bpy)] 2 (tBu2bpy = 4,4′-di-tert-butyl-2, 2′-bipyridyl) and UI3(THF)4 in the presence of additional tBu2bpy yields U(NtBu)(I) 2(tBu2bpy)(THF)2 (2), an unprecedented example of a monoimidouranium(IV) dihalide complex. The general synthesis of this family of uranium(IV) derivatives can be achieved more readily by adding 2 equiv of MN(H)R (M = Li, K; R = tBu, 2,6- iPrC6H3, 2-tBuC6H 4) to UX4 in the presence of coordinating Lewis bases to give complexes with the general formula U(NR)(X)2(L)n (X = Cl, I; L = tBu2bpy, n = 1; L = THF, n = 2). The complexes were characterized by 1H NMR spectroscopy and single-crystal X-ray diffraction analysis of compounds 2 and {U[N(2,6-iPrC 6H3)](Cl)2(THF)2}2 (4). (The X-ray structures of 5 and 6 are reported in the Supporting Information.)
