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Inside Cover: Tetracyclopenta[ def,jkl,pqr,vwx ]tetraphenylene: A Potential Tetraradicaloid Hydrocarbon (Angew. Chem. Int. Ed. 7/2015)
Author(s) -
Nobusue Shunpei,
Miyoshi Hirokazu,
Shimizu Akihiro,
Hisaki Ichiro,
Fukuda Kotaro,
Nakano Masayoshi,
Tobe Yoshito
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201412137
Subject(s) - antiaromaticity , hydrocarbon , cover (algebra) , derivative (finance) , homo/lumo , chemistry , crystallography , physics , materials science , nanotechnology , stereochemistry , organic chemistry , engineering , aromaticity , molecule , mechanical engineering , financial economics , economics
A potential tetraradicaloid hydrocarbon was synthesized by Y. Tobe and co‐workers. As described in their Communication on page 2090 ff., the tetramesityl derivative of tetracyclopenta[ def , jkl , pqr , vwx ]tetraphenylene exhibited remarkable antiaromaticity and a small HOMO–LUMO gap. In solution and in the crystal, the compound exists in the close‐shell D 2 h form rather than in the open‐shell D 4 h form, in accordance with theoretical calculations.

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