Cyclotrimerization of 9,10-dibromo-9,10-dihydrodibenzo[3,4:7,8]cycloocta[1,2-l]phenanthrene with potassium tert-butoxide in the presence a transition-metal catalyst afforded two polycyclic aromatic hydrocarbon stereoisomers consisting three cyclooctatetraene (COT) moieties connected via central benzene ring. Both isomeric tri[8]annulenes were obtained selectively through choice catalyst: The α,...

Periodoannulene molecules and ions CxIxq in planar geometry offer examples of systems with the potential for outer ? inner ? ring-current double aromaticity, given a sufficient overlap tangential p?-orbital manifolds on large atoms cycle. Previous theoretical work indicated concentric diatropic currents dication C6I62+. Ab initio ipsocentric calculations support an account terms frontier-orbita...

This article represents data on the effect of organometallic iron complexes: ferrocene, dicarbonyl dimer cyclopentadienyl and tricarbonyl cyclooctatetraene copolymerization methyl methacrylate (MMA) acrylonitrile (AN) initiated by benzoyl peroxide. It is shown that introduction metal complexes their structure affect initial rate copolymerization, form diagrams composition obtained copolymers, v...