Fig. 6

Covalent connection upon annealing of the organometallic chains from 6. a STM image of organometallic chains from 6 at 315 K. One Ag adatom in alkynyl–Ag–alkynyl is pointed by the yellow arrow. b STM image recorded after annealing the sample in a to 420 K. The H-type product is marked by dark blue circle; Glaser product at the termini of chain is marked by white circle; Glaser product in the middle of chain is marked by yellow circle Tunneling parameters: a V = −1.6 V, I = −0.2 nA; b V = −1.3 V, I = −0.3 nA