13775-18-3Relevant articles and documents
Reversible binding and reduction of dinitrogen by a uranium(III) pentalene complex
Cloke, F. Geoffrey N.,Hitchcock, Peter B.
, p. 9352 - 9353 (2002)
The U(III) mixed-sandwich compound [U(η-Cp*)(η-C8H4{SiiPr3-1,4}2)] 1 may be prepared by sequential reaction of UI3 with KCp* followed by K2[C8H4{SiiPr3-1,4}2], and has been crystallographically characterized. 1 reacts reversibly with dinitrogen to afford dimeric [{U(η-Cp*)(η-C8H4{SiiPr3-1,4}2)}2(μ-η2:η2-N2)] 2 , whose X-ray crystal structure reveals a sideways-bound, bridging diazenido (N22-) ligand. Copyright
Facile syntheses of unsolvated Ul3 and tetramethylcyclopentadienyl uranium halides
Evans, William J.,Kozimor, Stosh A.,Ziller, Joseph W.,Fagin, Anatolii A.,Bochkarev, Mikhail N.
, p. 3993 - 4000 (2005)
In the course of comparing the reaction chemistry of (C5Me 5)3U, 1, and its slightly less crowded analogue (C 5Me5H)3U, 2, new syntheses of Ul3, (C5Me4H)3U, (C5Me4H) 3UCl, 3, and (C5Me5)3UCl, 4, have been developed. Additionally, (C5Me5H)3Ul, 5, and (C5Me4H)2UCl2, 6, have been identified for the first time. A facile synthesis of unsolvated Ul3 is reported that proceeds in high yield with inexpensive equipment from iodine and hot uranium turnings. Both Ul3 and Ul3(THF) 4 react with KC5Me4H in toluene to make unsolvated C5Me4H)3U in higher yield than in previous reports that involve reduction of tetravalent (C5Me 4H)3UCl, 3. A more atom-efficient synthesis of complex 3 is also reported that proceeds from reduction of t-BuCl, PhCl, or HgCl 2 by 2. Similarly, (C5Me4H)3U reacts with Phi or Hgl2 to generate (C5Me4H) 3Ul. These studies also provided a basis to improve the synthesis of (C5Me5)3UCl from 1 by employing t-BuCl or HgCl2 as the halide source. Like (C5Me5)UCl, the (C5Me4H)3UCl complex reacts with HgCl 2 to form (C5Me5H)2 and (C 5Me4H)2UCl2, 6, but unlike (C 5Me5)3UX (X = Cl or l), the less substituted (C5Me4H)3UX complexes do not reduce t-BuCl or PhX. The synthesis of 6 from (C5Me4H)MgCl·THF and UCl4 is also included.
Low-valent uranium iodides: Straightforward solution syntheses of UI 3 and UI4 etherates
Carmichael, Christopher D.,Jones, Natalie A.,Arnold, Polly L.
, p. 8577 - 8579 (2009/04/12)
Uranium turnings react with elemental iodine in diethyl ether at room temperature, with sonication and/or stirring, over a period of days to afford UI3, UI4(OEt2)2, or UI 4(OBun2) depending on the stoichiometry or ether solvent. This is the first room temperature, and thus safe and convenient, synthesis of UI3.