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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
Based on Wikipedia pageviews and search interest, this topic gained significant attention on the selected date.
Atrane entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-21 and was most recently seen on 2026-04-21.
Atranes are a class of tricyclic molecules that are fused to a common central bond. Unlike the propellanes, the central bond is a transannular dative bond from a Lewis base—typically nitrogen—at one bridgehead to a Lewis acidic atom such as silicon or boron at the other bridgehead. Each of the three rings is therefore heterocyclic. Each of the rings is typically five atoms, or sometimes six atoms. The name "atrane" was first proposed by Mikhail Grigorievich Voronkov.
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