3744-07-8Relevant articles and documents
Simple N≡UF3 and P≡UF3 molecules with triple bonds to uranium
Andrews, Lester,Wang, Xuefeng,Lindh, Roland,Roos, Bjoern O.,Marsden, Colin J.
, p. 5366 - 5370 (2009/03/12)
UN-beatable? Laser-ablated uranium atoms activate NF3 and PF3 to form the N≡UF3 and P≡UF3 molecules containing novel terminal nitride and phosphide functional groups. These molecules are identified from matrix infrared spectra and theoretical methods. The N≡UF3 molecule contains the strongest triple bond to uranium in a ternary compound.
Modification of an NF3 film by sub-excitation electrons
Tegeder, Petra,Illenberger, Eugen
, p. 401 - 406 (2008/10/08)
By applying the IRAS technique (infrared-absorption-reflection spectroscopy) and electron stimulated desorption (ESD) of negative ions we demonstrate that a 10 monolayer (ML) film of NF3 is degraded in the course of low-energy electron irradiation in the range 0-5 eV which is far below the electronic excitation of NF3. Degradation is accompanied by the desorption of F- fragment ions from the film and formation of NF2 radicals and N2F4 molecules in the film. The energy dependence of the degradation cross-section follows that for resonant (dissociative) electron attachment in the low-energy region (≈0-5eV) and increases above 6 eV. We therefore identify (dissociative) electron capture at low energy as the only initial reaction responsible for the chemical changes in the NF3 film.
Electron affinities and gas-phase acidities of organogermanium and organotin compounds
Brinkman, Elizabeth A.,Salomon, Karen,Tumas, William,Brauman, John I.
, p. 4905 - 4910 (2007/10/02)
The electron affinities have been measured for trimethylgermanium and trimethyltin radicals as 31.9 ± 0.7 and 39.2 ± 1.5 kcal/mol, respectively, using electron photodetachment spectroscopy. The acidities (ΔH°acid) for the corresponding hydrides
Fluoride Affinities of Perfluorobenzenes C6F5X. Meisenheimer Complexes in the Gas Phase and Solution
Dillow, Glen W.,Kebarle, Paul
, p. 4877 - 4882 (2007/10/02)
Measurements of gas phase fluoride transfer equilibria lead to ΔGo and ΔHo for the reaction F- + C6F5X = where the substituents X of the perfluorobenzenes are F, H, CF3, COCH3, CN, and NO2.The relative energy changes are found to lead to an approximately linear correlation with the electron affinities of C6F5X.The gas-phase ΔGo and ΔHo data are used in combination with rate measurements in solution from the literature for a comparison of the reaction coordinates in the gas phase and solution and for determinations of the solvation energy of the transition state occuring in solution.
