Conspectus Highly conjugated hydrocarbons have attracted interest for use as active
materials in electronic devices such as organic field effect transistors (OFET) and organic …

Abstract Azulene 1, pentalene 2, and heptalene 3 are classical nonalternant hydrocarbons.
Their fascinating π-frameworks, consecutive arrangements of odd-membered carbocycles …

Whether tetra‐tert‐butyl‐s‐indacene is a symmetric D2h structure or a bond‐alternating C2h
structure remains a standing puzzle. Close agreement between experimental and computed …

Diradicaloid helicenes constructed formally by non‐benzenoid double π‐extension of
phenanthrene were synthesized by a common strategy involving double electrophilic …

The literature has seen a large increase in the number of new carbon‐based organic
diradicals/diradicaloids in recent years. While a plethora of new and exciting structures have …

Although polycyclic conjugated hydrocarbons (PCHs) and their analogues have gained
great progress in the fields of organic photoelectronic materials, the in‐depth study on …

A nonbenzenoid hydrocarbon, difluoreno [1, 9, 8-alkj: 1′, 9′, 8′-gfed] heptalene 1, is
synthesized. Experimental and theoretical investigations demonstrate that the planar and …

A direct, efficient and versatile strategy for the modulation of optoelectronic and magnetic
properties of indeno [1, 2-b] fluorene has been developed. 4-Substituted-2, 6 …

Antiaromatic polycyclic conjugated hydrocarbons (PCHs) are attractive research targets
because of their interesting structural, electronic and magnetic properties. Unlike aromatic …

Of the five possible indenofluorene regioisomers, examples of a fully conjugated indeno [1,
2‐a] fluorene scaffold have so far remained elusive. This work reports the preparation and …