Conspectus Aromaticity, one of the most fundamental concepts in chemistry, has attracted
considerable attention from both theoreticians and experimentalists. Much effort on …

Metallacyclobutadienes are analogues of cyclobutadienes in which one of the
cyclobutadiene CR groups has been formally replaced by a transition‐metal fragment …

Aromaticity, one of the most fundamental concepts in chemistry, can be classified as
Hückel-and Möbius-type according to the electron count and topology. In comparison …

Indolizine-fused metallafuran and metal–quinolizinium complexes were synthesized from
reactions between dipicolinyl-substituted propargylic alcohol HC≡ CC (OH)(CH2 (2-py)) 2 …

The incorporation of a metal-carbon triple bond into a ring system is challenging because of
the linear nature of triple bonds. To date, the synthesis of these complexes has been limited …

Polycyclic complexes containing a bridgehead transition metal are interesting species
because the transition metal is shared by all the rings simultaneously. In this study, we …

Isolation of the simplest 4π three‐membered heterocycles (1H‐azirine, oxirene, thiirene, and
selenirene) remains a big challenge due to their π‐antiaromaticity and significant ring strain …

Abstract The [1, 5]‐migration reaction has attracted considerable attention from
experimentalists and theoreticians for decades. Although it has been extensively …

The reactivity of low‐valent alkyl‐substituted metallacyclobutadienes towards electron‐rich
alkynes was studied. Treatment of the alkyl‐substituted rhenacyclobutadiene complexes Re …

This is a review of papers published in the year 2016 that focus on the synthesis, reactivity,
or properties of compounds containing a carbon-transition metal double or triple bond …