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.
Schematic representation of (i) a urea unit and its directional binding mode for an anion, (ii) urea based tripodal receptor (L), and (iii) electrostatic potential map for L calculated at the M06-2X/6-31G(d,p) level of theory (red = negative potential, blue = positive potential).
