Partial view of the crystal structure of1Fdown aC3axis, wheredAshows the 4.53 distance between two CuIcenters,dBgives the 3.90 spacing between the centroids of nearest-neighbor aromatic rings,dC,dD, anddEshow the 2.66 C–H interactions inferred to stabilize1F, anddFis one of the C–H interactions involved in anion binding. Hydrogen atoms are white; fluorine and boron in BF4–are green and pink, respectively.
