Open AccessIsolation of diborenes and their 90°-twisted diradical congeners
Author(s) -
Julian Böhnke,
Theresa Dellermann,
Mehmet Ali Çelik,
Ivo Krummenacher,
Rian D. Dewhurst,
Serhiy Demeshko,
William C. Ewing,
Kai Hammond,
M. Heß,
Eckhard Bill,
Eileen Welz,
Merle I. S. Röhr,
Roland Mitrić,
Bernd Engels,
Franc Meyer,
Holger Braunschweig
Publication year - 2018
Publication title -
nature communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.559
H-Index - 365
ISSN - 2041-1723
DOI - 10.1038/s41467-018-02998-3
Subject(s) - diradical , cleave , molecule , diamagnetism , reactivity (psychology) , chemistry , double bond , stereochemistry , crystallography , physics , organic chemistry , atomic physics , quantum mechanics , enzyme , medicine , alternative medicine , pathology , magnetic field , singlet state , excited state
Molecules containing multiple bonds between atoms—most often in the form of olefins—are ubiquitous in nature, commerce, and science, and as such have a huge impact on everyday life. Given their prominence, over the last few decades, frequent attempts have been made to perturb the structure and reactivity of multiply-bound species through bending and twisting. However, only modest success has been achieved in the quest to completely twist double bonds in order to homolytically cleave the associated π bond. Here, we present the isolation of double-bond-containing species based on boron, as well as their fully twisted diradical congeners, by the incorporation of attached groups with different electronic properties. The compounds comprise a structurally authenticated set of diamagnetic multiply-bound and diradical singly-bound congeners of the same class of compound.