Cycloheptatriene

Cycloheptatriene

Benzene, Aromaticity, and Benzene Derivatives

Published in Michael B. Smith, A Q&A Approach to Organic Chemistry, 2020

In (a) cyclobutadiene has only four π-electrons and is not aromatic. In (b) the cyclopropenyl cation has two π-electrons and is aromatic. In (c) cyclopentadiene does not have a continuous array of p-orbitals and is not aromatic. In (d) the cyclopentadienyl cation has only four π-electrons and is not aromatic. In (e) the cyclopentadienyl anion has six π-electrons and is aromatic. In (f) cyclohexadiene does not have a continuous array of p-orbitals and is not aromatic. In (g) cycloheptatriene does not have a continuous array of p-orbitals and is not aromatic. In (h) the cycloheptatrienyl cation has six π-electrons and is aromatic whereas the cycloheptatrienyl anion (i) has eight π-electrons and is not aromatic. Likewise, in (j) cylooctatetraene has eight π-electrons and is not aromatic. Are there molecules with more than one ring that are considered to be aromatic?

Polyaromatic hydrocarbons with an imperfect aromatic system as catalysts of interstellar H₂ formation

View Article

Journal Information

Published in Molecular Physics, 2023

Dávid P. Jelenfi, Anita Schneiker, Attila Tajti, Gábor Magyarfalvi, György Tarczay

Cycloheptatriene has a planar and a boat form [55]. According to former theoretical studies [55] and experiments [56,57] the boat form has lower energy. Therefore, in this work we investigated the reactions of the boat form only. H atoms can react with the boat form via two different paths. We refer to the upper path when a H atom approaches the ring from the side where the sp C atom sticks out from the plane. Contrastingly, if the H atom approaches the ring from the opposite direction, we will refer to it as the lower path.

Explore chapters and articles related to this topic

Benzene, Aromaticity, and Benzene Derivatives

Polyaromatic hydrocarbons with an imperfect aromatic system as catalysts of interstellar H2 formation

Polyaromatic hydrocarbons with an imperfect aromatic system as catalysts of interstellar H₂ formation