English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the on-surface synthesis of a non-benzenoid triradical throughdehydrogenation of truxene (C27H18) on coinage metal and insulator surfaces.Voltage pulses applied via the tip of a combined scanning tunnelingmicroscope/atomic force microscope were used to cleave individual C-H bonds intruxene. The resultant final product truxene-5,10,15-triyl (1) wascharacterized at the single-molecule scale using a combination of atomic forcemicroscopy, scanning tunneling microscopy and scanning tunneling spectroscopy.Our analyses show that 1 retains its open-shell quartet ground state, predictedby density functional theory, on a two monolayer-thick NaCl layer on a Cu(111)surface. We image the frontier orbital densities of 1 and confirm that theycorrespond to spin-split singly occupied molecular orbitals. Through oursynthetic strategy, we also isolate two reactive intermediates toward thesynthesis of 1 - derivatives of fluorenyl radical and indeno[1,2-a]fluorene,with predicted spin-doublet and spin-triplet ground states, respectively. Ourresults should have bearings on the synthesis of non-benzenoid high-spinpolycyclic frameworks with magnetism beyond Lieb's theorem.

Non-benzenoid high-spin polycyclic hydrocarbons generated by atom manipulation