Energetically optimized structure of Cg has been obtained by means of the semi-empirical (MIND0/3) MO calculation. A C, molecule has the same symmetry (DSh) as CT0 but with a slightly deformed geometry. The charge and the spin distribution shows a definite difference from that of C,g,. Such feature
Electronic structures of C70 crystalline phases
β Scribed by Kaoru Ohno; Jing-Zhi Yu; Yutaka Maruyama; Yoshiyuki Kawazoe; Takashi Takahashi
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 478 KB
- Volume
- 255
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
By means of an all-electron mixed basis approach, band structures of the C70 crystalline phases are calculated for the first time for fcc, hcp (c/a = 1.633) and also sc structures with at most four molecules inside a unit cell. The resulting densities of states are compared with our photoemission and inverse photoemission data of C7o powder study and the best agreement between the experiment and the present theory is found for the hcp symmetry.
π SIMILAR VOLUMES
The electronic and vibrational structures of C,, and C,,, have been calculated at the PM3 semiempirical level. C, has a partially delocalized structure, while C,, has both a localized set and a delocalized set of MOs. As with AM1 and MNDO, PM3 predicts the heat of formation of C,, to be greater than
Using the Car-Parrinello method based on the local density approximation of density functional theory, we have investigated the structural and electronic properties of the CT0 fullerene cluster in the prolate spheroidal structure of symmetry Dss. The Go structure has been fully relaxed and an intere
Intermediate neglect of differential overlap INDO calculations were used to study the structure of C CH . It was found that the CH group is mainly added to the C αC 70 2 2 I II Ε½ . C represents the first kind of carbon atom and so on or the C αC bond in C and I III III 70 a cyclopropane feature with
Electron energy loss spectroscopy of the C70 molecule in the gas phase, with angular analysis, has been investigated in the intermediate energy range (from excitation thresholds up to 80 eV above threshold). The occurrence of a 'plasmon like' process, different from the one-electron dipole-allowed e