Bonding, electric (hyper)polarizability, vibrational, and magnetic properties of heterofullerene C 48 B 12 are studied by first-principles calculations. Infrared-and Raman-active vibrational frequencies of C 48 B 12 are assigned. Eight 13 C and two 11 B nuclear magnetic resonance (NMR) spectral sign
Predicted molecular structure of novel C48B12
โ Scribed by M. Riad Manaa; Heather A. Ichord; David W. Sprehn
- Book ID
- 104108540
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 257 KB
- Volume
- 378
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
We report results of full geometry optimization and harmonic vibrational frequencies of the minimum energy structure of C 48 B 12 , and two low-lying isomers at the B3LYP/6-31G* level of theory. The minimum energy structure of C 48 B 12 proved to be the same as we have found in the case of C 48 N 12 [J. Am. Chem. Soc. 124 (2002) 13990]. The two low-lying structures with D 3d and S 6 symmetry proved to be 15 and 26 kcal/mol energetically less stable, respectively. Mulliken charge analysis showed that the minimum energy structure of C 48 B 12 could serve as an electron acceptor, in contrast to the donor character of C 48 N 12 .
๐ SIMILAR VOLUMES
Quantum-mechanical calculations at the Hartree-Fock and MP2 level of theory using various basis sets predict that the C-C interatomic distances are nearly identical ( rc~3 = 1.396 A, rcJx4 = 1.398 A). This is at variance with the results of a combined electron diffraction and microwave study, which