Fig. 3: Precursor and typical intermediates consisting of larger even- and odd-membered rings.
From: On-surface synthesis and characterization of anti-aromatic cyclo[12]carbon and cyclo[20]carbon
a I–a IV C20Cl12. b I–b IV C20Cl9. c I–c IV C20Cl2 with a 10-membered ring. d I–d IV C20Cl2 with 8- and 10-membered rings. e I–e IV C20Cl4 with a 9-membered ring. f I–f IV C20Cl2 with a 13-membered ring. g I–g IV C20Cl2 with a 16-membered ring. Structures (a I–g I), AFM images (a II–g II), AFM simulations (b III–g III), Laplace-filtered AFM images are shown (b IV–g IV). AFM simulations are based on gas-phase DFT-calculated geometries. The scale bar in (a II) applies to all images. Reference set point of Δz for a II to g II: I = 5 pA, V = 0.3 V.
