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.
Example of two vectors for the simple restraint potential. One is defined between a mean position of C5 atoms ( green ) and that of C3 atoms ( purple ) for each sugar molecule in β-cyclodextrin (a). Another is defined between two separated atoms ( green and purple ) in Ethyl p-tolylacetate (b).
