UV-photoelectron spectra

UV photoelectron spectra, 5, 517 Adenine, N ,9-dimethyl-UV photoelectron spectra, 5, 517 Adenine, 9-ethyl-IR spectra, 5, 518... 

Electronic structure and bonding in 2,2-diphenyl-l,3,2-dithiastannolane and -plumbolane were studied by UV photoelectron spectroscopy and ionization energies based on their He(I) and He(II) UV photoelectron spectra have been measured <83ICAL35>. 

Kera S, Yamane H, Fukagawa H, Hanatani T, Okudaira KK, Seki K, Ueno N (2007) Angle resolved UV photoelectron spectra of titanyl phthalocynine monolayer film on graphite. J Electron Spectrosc Relat Phenom 156 135... 

The UV photoelectron spectra of 1,4-dioxin, 1,4-dithiin, 1,4-oxathiin, and their dibenzo derivatives as well as the saturated compounds were detailed in CHEC(1984) <1984CHEC(3)958>. 

The bulk of UPS literature has appeared since 1970, and it has concentrated in two areas (1) interpreting spectra of organic vapors and (2) studing transition metal electronic band structure changes caused by sorption of simple gases on the metal surfaces. Interpreting uv photoelectron spectra is very difficult and until a data base of spectral measurements is accumulated, it will be used infrequently in surface chemical studies. 

UV Photoelectron Spectra of Heterocyclic Compounds , E. Heilbronner, J. P. Maier and E. Haselbach, in Physical Methods in Heterocyclic Chemistry , ed. A. R. Katritzky, Academic Press, New York, 1974, vol. 6, pp. 1-52. 

The UV photoelectron spectra of several chromans have been compared with other cyclic and acyclic ethers. The chroman spectra are clearly distinguishable from those of the other ethers and the differences have been interpreted in terms of the decreased conjugative effects of oxygen and increased hyperconjugative effects of the 4-methylene group (76T167). 

The UV photoelectron spectra of the saturated compounds have attracted considerable attention. According to current theories of bonding the two lone pair orbitals on oxygen and sulfur in saturated systems are primarily p-type. One is essentially non-bonding whereas the other, which lies in the C—Z—C plane, is largely bonding. Bands associated with ejection... 

Electronic,1991,2011-2313 NMR,2014,2015 IR and resonance Raman1991,2016,2017 and, recently, UV photoelectron spectra of Ni(R2NCS2)2 complexes were investigated.2018... 

Theoretical chemistry at UBC was further strengthened with the arrival of Delano Chong and Keith Mitchell in 1965 and 1966, respectively. Chong s interests in quantum chemistry have spanned the full range from semiempirical to ab initio molecular orbital methods. His long-standing interests in perturbation methods and constrained variations have figured prominently in his publications. He is probably best known for his attempts to calculate the X-ray and UV photoelectron spectra of molecules, often by means of perturbation corrections to Koopmans theorem.40 More recently he has shifted his focus to coupled pair functional methods and density functional methods, with a special interest in polarizabilities and hyperpolarizabilities.41... 

UV irradiation, effect on Pt complexes, 188, 190 UV spectra—See Absorption spectra, Emission spectra UV-photoelectron spectra,... 

The UV photoelectron spectra of the unsubstituted pnictogena-hetarenes allowed an almost perfectly linear correlation between the ionization energies /v(biA) of the... 

The majority of radical cations identified and characterized to date are relatively stable and their structures are closely related to those of the neutral diamagnetic precursors. In particular, a large number of species derived from aromatic hydrocarbons has been characterized by ESR [3] and optical spectroscopy [4], The close structural similarity manifests itself in an interesting relationship between the UV spectra of selected radical cations and the UV photoelectron spectra of their parent molecules. Since both transitions lead to the same (excited) state of the radical cation, the excitation energies, AE, of the radical cation correspond to differences in ionization energies, AI, documented in the photoelectron spectroscopic data of the parent molecules [7, 276, 277],... 

Table 9 UV Photoelectron Spectra of Oxazole and Benzoxazole (77JST(40)i9l, 78JST(43)203>...

Fig. 9. X-ray and UV photoelectron spectra of the conduction bands of Au and a theoretical density of states curve. For purposes of comparison the theoretical curve includes broadening with a 0.6 eV resolution function. Ref. (32)...

UV photoelectron spectra of P406 and P4O10 have been reported 141) and compared with the spectrum of P4 (142,143). The He(I) photoelectron spectrum of P4Oe contains five well-defined bands an extra band... 

UV Photoelectron Spectra. These in general have provided impressive support for both the qualitative ideas and the explicit quantitative results concerning the multiple M-M bonds (23, 28) and closely related ones such as the formal single bond (see Table 1) in dirhodium species (29). Such spectra have also strongly supported the accepted views on the electronic structures of many metal atom cluster compounds (30, 31). 

Isolated tellurium clusters 48-50 (Tex n = 7-9) were produced in a supersonic molecular beam and their vacuum-UV-photoelectron spectra were recorded at a photon energy of hv = 8.3 eV by a photoionization-photoelectron-photoion triple coincidence method. The trimer and tetramer were obtained as stable species in the tellurium cluster beam, unlike sulfur and selenium. The spectra of the odd-membered tellurium clusters have a tendency to be split and broadened, in contrast to those of the seven-membered clusters. For the clusters with n > 5, the spectra of tellurium clusters are similar to those of selenium counterparts, which may suggest a resemblance to the geometric structures between small tellurium and selenium clusters (see Chapters 14.09 and 14.10) <2002MI337>. A similiar study has been conducted by Curtiss and co-workers on selenium clusters <1998CPL(287)282>. 

The UV photoelectron spectra of two isomeric styrylthiophenes, 146 and 147, and six isomeric (thienylethenyl)-pyridines, 148-153, have been recorded and analyzed, making use of DFT BeckeSLYP calculations <2001EJ0121>. 

Fig. 4.11. Theoretical density of states of a-quartz from ab initio LDA pseudopotential calculations compared to experimental x-ray and uv photoelectron spectra (after Chelikowsky and Schluter, 1977 reproduced with the publisher s permission).

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