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.
(A) Lowest energy conformers of a model of structure 4, with DFT barriers (kcal/mol) to C–H abstraction at C3 and C10. (B) Transition structure of C3 (purple) hydrogen abstraction. (C) Transition structure of C3 (yellow) hydrogen. (D) Transition structure of C10 (green) hydrogen abstraction. (E) Transition structure of C10 (blue) hydrogen abstraction.
