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Anionic Oligomerization of Li2[B12H12] and Li[CB11H12]: An Experimental and Computational Study
被引:7
作者:
Davalos, Juan Z.
[1
]
Gonzalez, Javier
[1
]
Guerrero, Andres
[1
]
Hnyk, Drahomir
[2
]
Holub, Josef
[2
]
Oliva, Josep M.
[1
]
机构:
[1] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain
[2] ASCR, Vvi, Inst Inorgan Chem, Husinec Rez 25068, Czech Republic
关键词:
CHEMISTRY;
ENERGIES;
D O I:
10.1021/jp3102354
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
We present an experimental and computational study of the oligomerization in icosahedral closo-(car)boranes Li-2[B12H12] (I) and Li[CB11H12] (II). The experiments were performed on a hybrid ESI-TQ-FT-ICR mass spectrometer equipped with a 7.0 T superconducting magnet. The computational study consisted of finding energy minimum structures for the molecules I, II and the derived anions [B12H12](2-), [CB11H12](-), [I-2-Li](-), and [II2-Li](-), as well as an estimate for the dissociation energy in the processes [X-2-Li](-) -> X + [X-Li](-) with X = I, II. Comparison of experiments and computations shows an excellent agreement for the bond dissociation energy in the process [II2-Li](-) -> II + [II-Li](-) with Delta E = 1.5 eV.
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页码:1495 / 1501
页数:7
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