Fig. 1: Solution-phase synthesized [n]triangulene radicals.
From: Solution-synthesized stable triaza[4]triangulene triradical with a quartet ground state
![Fig. 1: Solution-phase synthesized [n]triangulene radicals.](http://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41467-026-69048-1/MediaObjects/41467_2026_69048_Fig1_HTML.png?as=webp)
a Previous examples of doublet [2]triangulenes, a triplet [3]triangulene, and triplet aza[3]triangulene diradical cations; b 3,8,13-triaza[4]triangulene 1 synthesized in the current work.
