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DENG Ju-Zhi CHEN Rong SEKIGUCHI Tetsuhiro BABA Yuji HIRAO Norie HONDA Mitsunori 《中国物理C(英文版)》2008,32(9)
Thin silicon Phthalocyanine dichloride films on HOPG were prepared and the sample was heated in the vacuum with laser.The thickness of the thin sample on HOPG was checked by X-ray photoemission spectroscopy.The orientation of the molecules in respect to the substrate plane Was investigated by measuring the silicon K-edge near edge X-ray absorption fine structure(NEXAFS).In the NEXAFS spectra of the thin sample,two clear peaks which were assigned to 1s→σ*Si-N and 1s→σ*Si-C1 appeared around 1847.2 eV and 1843.1 eV respectively.The intensities of the resonance peaks showed strong polarization dependence.A quantitative analysis of the polarization dependence revealed that the Si-N bond tended to lie down while the Si-C1 bond was out of the molecular plane. 相似文献
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Calculations have been performed on the transition metal hydroxides CuOH, AgOH, and AuOH using SCF and the coupled-cluster with singles, doubles, and perturbative triples (CCSD(T)) methods. The relativistic effect was included in the third-order Douglas—Kroll approximation. Equilibrium geometries, dissociation energies, vibrational frequencies, and dipole moments are reported for the ground state of each species. The relativistic stability of the valence s orbital weakens the ionic character and strengthens the covalent character of the metal—OH bond. For CuOH and AgOH the calculated results show good agreement with available experiment. The anomalous behaviour of AuOH is discussed from the relativistic point of view. 相似文献
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Thin silicon phthalocyanine dichloride films on HOPG were prepared and the 相似文献
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YOSHIHIDE NAKAO YOONG-KEE CHOE KENICHI NAKAYAMA KIMIHIKO HIRAO 《Molecular physics》2013,111(6):729-745
Kohn-Sham orbitals are used in the previously proposed CASCI-MRMP scheme (a multi-reference M?ller-Plesset (MRMP) method with a complete active space configuration interaction (CASCI) reference function). That is, the CASCI wave function was constructed using the Kohn-Sham orbitals and used as a reference function of the MRMP to incorporate the remaining dynamical correlation. The scheme was applied to the potential curves of the ground and low-lying excited states of N2, the potential curve of the ground state of CO, the barrier height of the H2CO → H2 + CO reaction, the valence π-π? and Rydberg excited states of benzene, and the low-lying excited states of ozone. Good agreement between the theory, experiment, and some benchmark calculations was obtained. The various orbitals which are investigated here do not give very different results. Rather, the choice of active space makes a considerable difference, and in particular the perturbation calculation is proved to be very important. 相似文献
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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option. 相似文献
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