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Mazitschek R Mülbaier M Giannis A 《Angewandte Chemie (International ed. in English)》2002,41(21):4059-4061
105.
Athanassios Tzouvaras 《Archive for Mathematical Logic》2001,40(2):131-145
We formulate C. Freiling's axioms of symmetry for general second-order structures with respect to a certain ideal of small
sets contained in them and find several equivalent formulations of the principles. Then we focus on particular models, namely
saturated and recursively saturated ones, and show that they are symmetric with respect to appropriate classes of small sets
when their second-order part consists of definable sets. Some asymmetric models are also exhibited as well as partial asymmetric
ones constructed by forcing.
Received: 8 January 1998 / Published online: 21 December 2000 相似文献
106.
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. 相似文献
107.
DFT assessment of the spectroscopic constants and absorption spectra of neutral and charged diatomic species of group 11 and 14 elements 下载免费PDF全文
Athanassios C. Tsipis 《Journal of computational chemistry》2014,35(24):1762-1777
The spectroscopic constants and absorption spectra of neutral and charged diatomic molecules of group 11 and 14 elements formulated as [M2]+/0/? (M = Cu, Ag, Au), and [E2]+/0/? (E = C, Si, Ge, Sn, Pb) have been calculated at the PBE0/Def2‐QZVPP level of theory. The electronic and bonding properties of the diatomics have been analyzed by natural bond orbital analysis approach and topology analysis by the atoms in molecules method. Particular emphasis was given on the absorption spectra of the diatomic species, which were simulated by time‐dependent density functional theory calculations employing the hybrid Coulomb‐attenuating CAM‐B3LYP density functional. The simulated absorption spectra of the [M2]+/0/? (M = Cu, Ag, Au) and [E2]+/0/? (E = C, Si, Ge, Sn, Pb) species are in close resemblance with the experimentally observed spectra whenever available. The neutral M2 and E2 diatomics strongly absorb in the ultraviolet region, given rise to UVC, UVA and in a few cases UVB absorptions. In a few cases, weak absorbion bands also occur in the visible region. The absorption bands have thoroughly been analyzed and assignments of the contributing principal electronic transitions associated to individual excitations have been made. © 2014 Wiley Periodicals, Inc. 相似文献
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Athanassios Tzouvaras 《Archive for Mathematical Logic》2011,50(3-4):513-513
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Development of CN Coupling Using Mechanochemistry: Catalytic Coupling of Arylsulfonamides and Carbodiimides 下载免费PDF全文
Davin Tan Cristina Mottillo Athanassios D. Katsenis Dr. Vjekoslav Štrukil Prof. Dr. Tomislav Friščić 《Angewandte Chemie (International ed. in English)》2014,53(35):9321-9324
Reported herein is the mechanochemical synthesis of sulfonyl guanidines, a family of molecules which are relevant as pharmaceuticals and herbicides, by direct coupling of sulfonamides and aromatic or aliphatic carbodiimides. Attempts to conduct the coupling in solution have either failed or given very low conversions, thus demonstrating mechanochemistry as the necessary component for the discovery of this synthetic strategy. 相似文献
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