| 6XJK: reference: Explicit Representation of Cation-pi Interactions in Force Fields with 1/r(4) Nonbonded Terms., Turupcu A, Tirado-Rives J, Jorgensen WL, J Chem Theory Comput. 2020 Nov 10;16(11):7184-7194. doi:, 10.1021/acs.jctc.0c00847. Epub 2020 Oct 13. PMID: 33048555 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).