Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
X‐ray crystal structures of a) 1⋅Cl−,4 b) 1⋅Br−, d) 1⋅AcO− and e) 1⋅NO3 −. Energy‐minimised models of c) 1⋅I− and f) 1⋅HCO3 −. The transporter is shown in ball‐and‐stick mode, and the anions in CPK mode. The countercations are omitted for clarity. The aromatic centroid‐to‐centroid distance is shown for each structure.
