Semiempirical and ab initio SCF calculations are reported for the Cs, fidkenms with isolated pentagons. The optimized geometries and relative stabilities are discussed. All methods applied predict two nearly isoenergetic structures with Ds and DZd symmetry to be the most stable of the 24 isomers con
Quantum-chemical study of C78 fullerene isomers
β Scribed by Dirk Bakowies; Achim Gelessus; Walter Thiel
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 462 KB
- Volume
- 197
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Semi-empirical and ab initio calculations are reported for the five Crs fullerenes with isolated pentagons. The optimized geometries and relative stabilities are discussed. The D3s structure previously favored on the basis of simple Hilckel arguments is found to be the least stable isomer at all theoretical levels applied. The most stable isomer corresponds to a Czy structure which has recently been observed experimentally together with two other isomers. Infrared spectra are predicted for all five isomers.
π SIMILAR VOLUMES
The five possible isolated-pentagon fullerene isomers of C, are investigated employing the Hartree-Fock self-consistent field method with minimaI and double-zeta quality basis sets. Gf the five structures, two have Cr, symmetry (C,(I) and C,,( II) ), two others have D3,, symmetry (D,,,(I) and Dab (I
## Abstract The chlorinated fullerenes C~78~(2)Cl~18~ and C~78~(3)Cl~18~ were synthesized by highly selective chlorination of the individual isomers. They were crystallized as C~78~(2)Cl~18~β Br~2~β TiCl~4~ and solvent free C~78~(3)Cl~18~. The carbon connectivities of both isomers have been confirmed