Rotational spectroscopy reveals that fluorination switches CO–arene interactions to a nonclassical lp⋯π-hole binding motif. CO binds perpendicularly to perfluorinated aromatics, with C ← O bond contraction analogous to metal carbonyls, highlighting how π-hole interactions control ligand behaviour in weakly bound systems.
Fluorination switches CO–arene binding to a π-hole regime, enabling nonclassical carbonyl behaviour
Sonia Melandri;Giovanni Bistoni
;
2026
Abstract
Rotational spectroscopy reveals that fluorination switches CO–arene interactions to a nonclassical lp⋯π-hole binding motif. CO binds perpendicularly to perfluorinated aromatics, with C ← O bond contraction analogous to metal carbonyls, highlighting how π-hole interactions control ligand behaviour in weakly bound systems.File in questo prodotto:
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