Determination of the Bond Dissociation Energies of Ammonia D0(H2N H) and D(H2N+ H)by Synchrotron Radiation

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (8): 1228.

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Determination of the Bond Dissociation Energies of Ammonia D₀(H₂N H) and D(H₂N⁺ H)by Synchrotron Radiation

QI Fei, SHENG Liu-Si, YU Shu-Qin, ZHANG Yun-Wu

National Synchrotron Radiation Laboratory, Department of Modern Chemistry, University of Science and Technology of China, Hefei, 230026

Received:1993-10-26 Revised:1994-01-15 Online:1994-08-24 Published:1994-08-24

Abstract

Abstract: Photoionization experiments of ammonia have been performed by synchrotron radiation vacuum ultraviolet light source in U10A, NSRL.Photoionization efficiency curves of H⁺, NH₂⁺and NH₃⁺from NH₃ were measured, and appearance potentials of H+ and NH₂⁺ were 18.57±0.05eV, 15.77±0. 02 eVrespectively and the ionization potential of NH₃ was 10. 22±0. 02 eV. The N─Hbond dissociation energy D0(H₂N H)=4. 97±0.05 eVas well as the dissociation energy D₀(H₂N⁺H)=5.55±0.02 eVwas determined from the data.

Key words: Synchrotron radiation, Photoionization, Ammonia, Dissociation energy

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QI Fei, SHENG Liu-Si, YU Shu-Qin, ZHANG Yun-Wu. Determination of the Bond Dissociation Energies of Ammonia D₀(H₂N H) and D(H₂N⁺ H)by Synchrotron Radiation[J]. Chem. J. Chinese Universities, 1994, 15(8): 1228.

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Determination of the Bond Dissociation Energies of Ammonia D₀(H₂N H) and D(H₂N⁺ H)by Synchrotron Radiation

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