In the January/February issue of the magazine American Scientist, Chemistry Nobel Laureate Roald Hoffmann took exception to scientists applying the concept of aromaticity beyond organic molecules to ...

In 1862, a chemist nodded off in front of a fire and began to dream. August Kekulé had been pondering the most pressing question in his field at the time: what was the chemical structure of a curious ...

Aromaticity is one of chemistry’s oldest concepts to describe the behavior of molecules. Chemists created it 150 years ago to help visualize and explain the bonding, structure, and reactivity of ...

The term aromaticity was initially introduced to describe the properties of molecules with special aromatic odor, such as benzene, and now is considered as one of the most important concepts in ...

Aromaticity is a fundamental concept with implications spanning all the chemical sciences. Hückel’s (4n+2)π-electron rule is the standard criterion to determine aromaticity and it applies well to ...

Key: carbon, black; nitrogen, blue; silicon, orange; uranium, green; bismuth, purple. Hydrogen atoms and charge-balancing cation omitted for clarity. In a world first, the team, led by Professor ...

Excited-state aromaticity refers to the transient stabilisation or destabilisation of cyclic π-electron systems upon photoexcitation. In the electronic ground state many organic compounds obey ...