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.
Change in partial charge distribution (Δq) at the H-bond donor–acceptor sites of the free edges due to base-pairing. Green text is used for sites with improved H-bonding potential and red text is used for sites with reduced H-bonding potential. All values are reported as a fraction of elementary charge.
