Ontology highlight
ABSTRACT:
SUBMITTER: Nees S
PROVIDER: S-EPMC7589364 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
Nees Samuel S Kupfer Thomas T Hofmann Alexander A Braunschweig Holger H
Angewandte Chemie (International ed. in English) 20200825 42
Theoretical studies predicted the planar cyclopenten-4-yl cation to be a classical carbocation, and the highest-energy isomer of C<sub>5</sub> H<sub>7</sub> <sup>+</sup> . Hence, its existence has not been verified experimentally so far. We were now able to isolate two stable derivatives of the cyclopenten-4-yl cation by reaction of bulky alanes Cp<sup>R</sup> AlBr<sub>2</sub> with AlBr<sub>3</sub> . Elucidation of their (electronic) structures by X-ray diffraction and quantum chemistry studies ...[more]