Photoelectron–neutral–neutral coincidence studies of dissociative photodetachment
摘要:
Photoelectron–neutral–neutral coincidence spectra have been measured for the dissociative photodetachment of O4− (O4−+hν→O2+O2+e−) at 523 and 349 nm. The neutral photofragment translational energy spectrum, the photoelectron spectrum, and the correlations of the translational energy and photoelectron energy are presented here. The correlation spectra reveal phenomena that are not discernable in either one-dimensional measurement. Features are observed which indicate that non-Franck–Condon processes play a role in the dissociative photodetachment of O4− at 349 nm.
Measurement of the product ion ratio N4+/N3+ in the radiolysis of nitrogen
作者:Shingo Matsuoka、Hirone Nakamura、Takaaki Tamura
DOI:10.1016/0009-2614(84)80310-3
日期:1984.4
The ratio of N4+ to N3+ formed in the radiolysis of gaseous nitrogen has been measured to be 4.7 ± 0.4 using a time-resolved atmospheric pressure ionization mass spectrometer. The limit of error has been evaluated from the ion mass discrimination of the apparatus.
Reactions of titanium dioxides with water molecules have been studied by matrixisolation infrared and density functional theoretical calculations. In solid argon, titanium dioxide molecules reacted with water to form OTi(OH)2 molecules spontaneously on annealing. The potential energy surface along the TiO2+H2O→OTi(OH)2 reaction path was calculated. Although titanium dioxide–water complex was predicted
通过基质隔离红外和密度泛函理论计算研究了二氧化钛与水分子的反应。在固态氩气中,二氧化钛分子与水反应,在退火时自发形成OTi(OH)2分子。计算了沿着TiO 2 + H 2 O→OTi(OH)2反应路径的势能面。尽管预计二氧化钛与水的络合物是稳定的,但由于低能垒和高水解反应放热性,未观察到该络合物。还提供了形成OTi-OH 2复合物的证据。
Photodissociation reaction CO−3
作者:J.T. Moseley、R.A. Bennett、J.R. Peterson
DOI:10.1016/0009-2614(74)85417-5
日期:1974.5
PhotodissociationreactionCO−3 + hv → CO2 + O− has been observed at seven photon energies between 2.35 and 2.71 eV using a drift tube mass spectrometer and an argon ion laser. The total cross sections for the destruction of CO−3 due to photons of these energies have been measured, and it is concluded that essentially all of this destruction is due to photodissociation. The photodestruction of CO−3
Infrared Spectra of <b><i>cis</i></b>- and <b><i>trans</i></b>-Peroxynitrite Anion, OONO<sup>-</sup>, in Solid Argon
作者:Binyong Liang、Lester Andrews
DOI:10.1021/ja0114299
日期:2001.10.1
of NO/Ar and O(2)/Ar mixtures gives new metal-independent infrared bands at 1458.3 and 806.1 cm(-)(1), and at 1433.3 and 983.2 cm(-1), in addition to known O(-4) and (NO)(-2) absorptions. The new bands are not observed with CCl(4) added to capture electrons or in O(2) and NO experiments without laser ablation to produce electrons, which identifies new product anions. Based on (15)NO and (18)O(2) isotopic
Coordination of niobium and tantalum oxides by Ar, Xe and O2: Matrix isolation infrared spectroscopic and theoretical study of NbO2(Ng)2 (Ng=Ar, Xe) and MO4(X) (M=Nb, Ta; X=Ar, Xe, O2) in solid argon
作者:Yanying Zhao、Xuming Zheng、Mingfei Zhou
DOI:10.1016/j.chemphys.2008.03.026
日期:2008.7
which are coordinated by one argon atom in solid argon matrix. The coordinated Ar atom in MO4(Ar) can be replaced by O2 or Xe in forming the MO6 and MO4(Xe) complexes. The results indicate that the NbO2, NbO4 and TaO4 molecules trapped in solid noble gas matrixes should be regarded as the NbO2(Ng)2 and MO4(Ng) (Ng = Ar, Xe; M = Nb, Ta) complexes instead of “isolated” metal oxide species.