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Stop rotating! One substitution halts the B 19 − motor

2014; Royal Society of Chemistry; Volume: 50; Issue: 73 Linguagem: Inglês

10.1039/c4cc03698k

1364-548X

Francisco Cervantes-Navarro, Gerardo Martínez‐Guajardo, Edison Osorio, Diego Moreno, William Tiznado, Rafael Islas, Kelling J. Donald, Gabriel Merino,

Boron and Carbon Nanomaterials Research

The B19− anion and other boron species have been dubbed ‘Wankel motors’ for the almost barrierless rotation of inner and outer concentric rings relative to each other in these compounds. A single substitution in B19− is shown to shut down the well-established fluxionality in the anion. A carbon atom substituted in the structure to give a neutral CB18 species is shown computationally to enforce bond localization.