910029-71-9

Upstream product

• 7553-56-2 iodine 
• 75-64-9 tert-butylamine 
• 791-28-6 Triphenylphosphine oxide 
• 875907-77-0 U(tert-butylimido)2I₂(THF)2 

Downstream Products

• 1013427-69-4 U(⁽¹⁵⁾NPh)2(I)2(OPPh₃)2 
• 1013427-70-7 [U(⁽¹⁵⁾NPh)(N(t)Bu)(I)2(OPPh₃)2] 
• 910029-72-0 U(NPh)2(I)2(OPPh₃)2 
• 1013427-65-0 [U(NPh)(N(t)Bu)(I)2(OPPh₃)2] 
• 1243549-16-7 trans,trans,trans-[U(VI)(2,5-dimethylpyrrolide)2(triphenylphosphine oxide)2(tert-butylimido)2] 
• 1013427-67-2 [U(NMes)2(I)2(OPPh₃)2] 
• 1013427-66-1 [U(NC(CH₃)3)(NC₆H₂(CH₃)3)I₂(OP(C₆H₅)3)2] 

Relevant academic research and scientific papers

UI4(1,4-dioxane)2, [UCl4(1,4-dioxane)] 2, and UI3(1,4-dioxane)1.5: Stable and versatile starting materials for low- and high-valent uranium chemistry

The uranium(III) and uranium(IV) iodide complexes UI3(1,4- dioxane)1.5 and UI4(1,4-dioxane)2 have been easily prepared in high yield by reacting uranium turnings with a 1,4-dioxane solution of iodine under mild

PREPARATION OF URANIUM COMPOUNDS

UI3(1,4-dioxane)1.5 and UI4(1,4-dioxane)2, were synthesized in high yield by reacting turnings of elemental uranium with iodine dissolved in 1,4-dioxane under mild conditions. These molecular compounds of uranium are thermally stable and excellent precursor materials for synthesizing other molecular compounds of uranium including alkoxide, amide, organometallic, and halide compounds.

Synthesis and reactivity of the imido analogues of the uranyl ion

Addition of 1.5 equiv of I2 to a THF solution of UI 3(THF)4, containing either 6 equiv of tBuNH2 or 2 equiv of RNH2 (R = Ph, 3,5-(CF 3)2C6H3, 2,6-(iPr) 2C6H3) and 4 equiv of NEt3, generates orange solutions containing U(NtBu)2I 2(THF)2 (1) or U(NAr)2I2(THF) 3 (Ar = Ph, 2; 3,5-(CF3)2C6H 3, 3; 2,6-(iPr)2C6H3, 4), respectively, all of which can be isolated in good yields. Alternatively, 1 can be prepared by reaction of uranium metal with 3 equiv of I2 and 6 equiv of tBuNH2, also in good yield. Complexes 1-4 have been characterized by X-ray crystallography, and each of these complexes exhibits linear N-U-N linkages and short U-N bonds. Using density functional theory simulations of complexes 1 and 2, two triple bonds between the metal center and the nitrogen ligands were identified. Complexes 1 and 2 readily react with neutral Lewis bases such as pyridine or Ph3PO to form U(NR)2I2(L)2 (R = tBu, L = py, 5; Ph3PO, 7; R = Ph, L = py, 6; Ph3PO, 8), and with PMe 3 to form U(NR)2I2(THF)(PMe3) 2 (R = tBu, 9; Ph, 10). The solid-state molecular structures of 5, 7, and 9 have been determined by X-ray crystallography, and these complexes, like their parent compounds, exhibit linear N-U-N angles and short U-N bonds. Complexes 1 and 2 also react with AgOTf in CH 2CI2, forming U(NR)2(OTf)2(THF) 3 (R = tBu, 11; Ph, 12) after recrystallization from THF. Crystals of 12 grown from CH2CI2 were found to contain a dimer, [U(NPh)2(OTf)2(THF)2]2, a complex possessing bridging triflate groups.