A category of parallel π‐stacking interaction, termed pancake bonding, is surveyed. The
main characteristics are: the interaction occurs among radicals with highly delocalized π …

In this Review, we showcase the fundamental processes of intermolecular and
intramolecular singlet fission (SF). Furthermore we prioritize the information, which is …

Hydrogen bond is a unique interaction whose importance is great in chemical and bio-
chemical reactions including life processes. The number of studies on H-bonding is large …

The high symmetry and stability of phenalenyl systems, both as the planar π-radical (P•) and
as the π-cation (P+), are desirable characteristics of prototypical aromatic donor/acceptor …

Unusual dimers with wide interplanar separations, that is, very long bonds with d D≈ 3.05 Å,
are common to the spontaneous self-association of various organic π-radicals in solution …

Phenalenyl and a wide variety of its derivatives form stable radicals, which often associate in
various aggregates with interesting properties that include magnetism and high electrical …

Aromatic stacking has played a significant role in the design of discrete supramolecular
systems. However, for many years, the stacking of conjugated radical cations has been …

Reported herein is the first isolation of tetracyano‐naphthalenediimide [NDI (CN) 4] and its
radical anion, and structural elucidation through spectroscopic and X‐ray diffraction studies …

The 2.89-Å intradimer separation for cofacial [TCNE] 22-(TCNE= tetracyanoethylene) dimers
is twice that of conventional C− C bonds but∼ 0.6 Å shorter than the sum of the van der …

Tetracyanoethylene (TCNE) undergoes numerous reactions and is reported to exist in many
structural motifs. Identification of these forms and motifs can be challenging. Nonetheless …