Photoelectron spectroscopic study

Photoelectron spectroscopic studies show that the first ionization potential (lone pair electrons) for cyclic amines falls in the order aziridine (9.85 eV) > azetidine (9.04) > pyrrolidine (8.77) >piperidine (8.64), reflecting a decrease in lone pair 5-character in the series. This correlates well with the relative vapour phase basicities determined by ion cyclotron resonance, but not with basicity in aqueous solution, where azetidine (p/iTa 11.29) appears more basic than pyrrolidine (11.27) or piperidine (11.22). Clearly, solvation effects influence basicity (74JA288). 

X-ray photoelectron spectroscopic study of the spontaneously passive amorphous Fe-10Cr-13P-7C alloy in 1 N HCl revealed that the passive film consists of Cr, 0 , OH" and HjO, and hence the passive film has been called a passive hydrated chromium oxyhydroxide film (CrO (OH)j Subsequent investigations have revealed that... 

One of the most important parameters of ITO, apart from the transparency, is the relatively high work function. In a comparative photoelectron spectroscopic study of ITO from different sources, and prepared by different techniques, a variation in the chemical composition and work functions are reported [101, 105]. For three carefully chosen types of ITO, the chemical composition and work functions... 

Kishi, K and Ikeda, S. (1974) X-ray photoelectron spectroscopic study of the reaction of evaporated metal films with chlorine gas. The Journal of Physical Chemistry, 78, 107—112. 

Dickinson T, Povey AP, Sherwood PMA. 1975. X-ray photoelectron spectroscopic studies of oxide-films on platinum and gold electrodes. J Chem Soc Faraday Trans 171 298-311. 

Takasu Y, Matsuda Y, Toyoshima I. 1984. A photoelectron spectroscopic study of the effect of particle-size on the adsorbed state of carbon-monoxide over supported palladium catalysts. Chem Phys Lett 108 384-387. 

An X-ray photoelectron spectroscopic study (132) of some cobalt(II) Schiff base complexes and their dioxygen adducts finds that the cobalt core electron binding energies in... 

Domelsmith, L. N., and Houk, K. N. (1978) Photoelectron spectroscopic studies of hallucinogens The use of ionization potentials in QSAR. In NIDA Research Monograph Series 22, edited by G. Barnett, M. Trsic, and R. E. Willette, pp. 423-440. U. S. Govt. Printing Office, Washington, D. C. 

W. Rettig and R. Gleiter, Dependence of intramolecular rotation in p-cyano-N,N-dialkylanilines on the twist angle. A fluorescence, UV absorption, and photoelectron spectroscopic study. J. Phys. Chem. 89,4676(1985). 

Brion, D. Photoelectron spectroscopic study of the surfaee degradation of pyrite (FeS2), ehaleopyrite (CuFeS2), sphalerite (ZnS), and galena (PbS) in air and water, Appl. Surf. Sci., 1980, Volume 5, 133-52. 

For a recent photoelectron spectroscopic study of some closo-carboranes C2B 2Hn n = 5, 6, 7, or 12) which supports this skeletal bonding treatment, see Ref. 82a). 

The UV PE spectra of furazan and benzofurazan have been recorded and interpreted with the aid of ab initio MO calculations. X-ray photoelectron spectroscopic studies for benzotrifuroxan support the NMR assignment of structure as (15) rather than hexanitrosobenzene. The radical anions of benzofurazan and benzofuroxan, generated by alkali metal or electrochemical reduction have been studied by ESR spectroscopy. 

UV photoelectron spectroscopic study of spiranes (65) allowed a quantitative estimation of spiroconjugation of the lone pair orbitals of the sulfur atom. This spiroeffect markedly decreases... 

Laux, J. M., J. C. Hemminger, and B. J. Finlayson-Pitts, X-ray Photoelectron Spectroscopic Studies of the Heterogeneous Reaction of Gaseous Nitric Acid with Sodium Chloride Kinetics and Contribution to the Chemistry of the Marine Troposphere, Geophys. Res. Let., 21, 1623-1626 (1994). 

He I photoelectron spectroscopic studies of the electronic structure of 2(3//)-furanone (4a) and 2(5//)-furanone (5a) were found to be consistent with their chemical stabilities. The IP (9.67 eV) of the HOMO of 2(3H)-furanone is significantly lower than the IP (10.65 eV) of the HOMO of the 2(5//)-furanone. Calculations for both molecules showed that the total energy of 5a is lower than that of 4a (94MI2). At room temperature, 2(3//)-furanone (4a), which is an unstable molecule, is formally converted into the 2(5//)-furanone (5a). This conversion involves a [1.3][Pg.277]

From photoelectron spectroscopic studies it is apparent that a second ionization channel starts at 11.4eV in the case of benzene, i.e., at about 2.15 eV above the first ionization potential.219 The tail of the calculated spectrum will, therefore, be buried beneath the second ionization threshold. The second ionization threshold is indicated on Figure 30 by an arrow. Finally, there have been recent suggestions that there are two a ionization potentials, at 10.35 and 10.85 eV.220 If correct, excitation of these a-electrons would also lead to absorption intensity obscuring the contribution of transitions of the elg orbitals. 

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