Chemical Science
Edge Article
surprisingly low strain and considerable p overlap is due to 18 A. Robert, P. Dechambenoit, E. A. Hillard, H. Bock and
a topological transformation of twist into writhe by folding of F. Durola, Chem. Commun., 2017, 53, 11540–11543.
¨
¨
the Mobius ring into a 3D structure, a process which is similar 19 M. Neeb, C. Hohn, F. R. Ehrmann, A. Hartsch, A. Heine,
to the supercoiling of DNA.34 Annulenes with chiral p systems
F. Diederich and G. Klebe, Bioorg. Med. Chem., 2016, 24,
4900–4910.
are interesting from another point of view. Theoretical calcu-
lations predict that upon irradiation with a strong laser pulse 20 M. Sasikumar, D. Bharath, G. S. Kumar, N. R. Chereddy,
(even in the absence of a magnetic eld), ring currents should
be induced which are orders of magnitude larger than the
currents induced in a superconducting NMR magnet.35,36
S. Chithiravel, K. Krishnamoorthy, B. Shanigaram,
K. Bhanuprakash and V. J. Rao, Synth. Met., 2016, 220,
236–246.
Moreover, peculiar nonlinear optical37 and two photon absorp- 21 M. G. Belarmino Cabral, D. Pereira de Oliveira Santos,
tion properties38 have been predicted for Mobius annulenes.
¨
R. Cristiano, H. Gallardo, A. Bentaleb, E. A. Hillard,
F. Durola and H. Bock, ChemPlusChem, 2017, 82, 342–346.
¨
22 F. Kohler, Dissertation, University of Kiel, 2008The
Conflicts of interest
algorithm is based is based on a method developed by
K. Klenin and J. Langowski, Biopolymers, 2000, 54, 307–317.
23 Z. Chen, C. S. Wannere, C. Corminboeuf, R. Puchta and
P. v. R. Schleyer, Chem. Rev., 2005, 105, 3842–3888.
There are no conicts to declare.
Acknowledgements
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01) and the German Research Foundation (SFB677) are grate-
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