Anion–π catalysis on carbon allotropes

• M. Ángeles Gutiérrez López,
• Mei-Ling Tan,
• Giacomo Renno,
• Augustina Jozeliūnaitė,
• J. Jonathan Nué-Martinez,
• Javier Lopez-Andarias,
• Naomi Sakai and
• Stefan Matile

Beilstein J. Org. Chem. 2023, 19, 1881–1894, doi:10.3762/bjoc.19.140

• intermediate XIV [24][25]. Thus, this reaction can be considered as the anion–π catalysis counterpart of the steroid cyclizations catalyzed in nature with the charge inverted, conventional cation–π interactions [15]. Anion–π catalysis on fullerene dimers The strength of anion–π interactions increases with face

• fullerenes as well. The unique polarizability of fullerene monomers like 1 is thought to induce strong anion–π interactions and thus account for the observed catalytic activity (Figure 7A) [12]. This polarizability should further increase in fullerene dimers like 36 [80]. Anions, anionic reactive

• insensitivity of fullerene monomers 22 thus supported that 38 and 40 activate and inactivate fullerene dimers 37 by intercalation in-between the two fullerenes. Replacement of the second fullerene in dimer 37 with a poorly polarizable naphthalenediimide (NDI) in 44 increased the catalytic activity of fullerene

Tuning the interactions between electron spins in fullerene-based triad systems

• Maria A. Lebedeva,
• Thomas W. Chamberlain,
• E. Stephen Davies,
• Bradley E. Thomas,
• Martin Schröder and
• Andrei N. Khlobystov

Beilstein J. Org. Chem. 2014, 10, 332–343, doi:10.3762/bjoc.10.31

• -fullerene spacing. The shorter oxalate-bridged triads exhibit stronger spin–spin coupling with triplet character, while in the longer terephthalate-bridged triads the intramolecular spin–spin coupling is significantly reduced. Keywords: carbon nanomaterials; electrochemistry; EPR; fullerene dimers