title: Stop rotating! One substitution halts the B19₁₉⁻ motor.
abstract: 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.
authors: Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida. Km 6 Antigua Carretera a Progreso. Apdo. Postal 73, Cordemex, 97310, Mérida, Yuc., Mexico. gmerino@mda.cinvestav.mx.
authors: Francisco
authors: F
authors: Cervantes-Navarro
authors: Gerardo
authors: G
authors: Martínez-Guajardo
authors: Edison
authors: E
authors: Osorio
authors: Diego
authors: D
authors: Moreno
authors: William
authors: W
authors: Tiznado
authors: Rafael
authors: R
authors: Islas
authors: Kelling J
authors: KJ
authors: Donald
authors: Gabriel
authors: G
authors: Merino