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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Gas-Phase Oxidation of Cm~+and Cm~(2+)-Thermodynamics of Neutral and Ionized CmO
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Gas-Phase Oxidation of Cm~+and Cm~(2+)-Thermodynamics of Neutral and Ionized CmO

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Fourier transform ion cyclotron resonance mass spectrometry was employed to study the products and kinetics of gas-phase reactions of Cm~+and Cm~(2+);parallel studies were carried out with La~(+/2+),Gd~(+/2+)and Lu~(+/2+).Reactions with oxygen-donor molecules provided estimates for the bond dissociation energies,DM~+-O(M=Cm,Gd,Lu).The first ionization energy,IECmO,was obtained from the reactivity of CmO~+with dienes,and the second ionization energies,IEMO~+(M=Cm,La,Gd,Lu),from the rates of electron-transfer reactions from neutrals to the MO~(2+)ions.The following thermodynamic quantities for curium oxide molecules were obtained:IECmO=6.4 ± 0.2 eV;IECmO~+=15.8 ± 0.4 eV;DCm-O=710 ± 45 kJ mol~(-1);DCm~+-O=670 ± 40 kJ mol~(-1);and DCm~(2+)-O=342 ± 55 kJ mol~(-1).Estimates for the M~(2+)-O bond energies for M=Cm,La,Gd,and Lu are all intermediate between DN2-Oand DOC-O-that is,167 kJ mol~(-1)

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