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.
Optimized structure of [Fe4S4(imidazol-2-ylidene)4]0, the computational model used for the DH complex. The unique iron site, labeled Fe4 in the text, is located at the bottom on the right. Color code: carbon (grey), nitrogen (blue), iron (red), and sulfur (yellow). Hydrogen atoms are not shown for the sake of clarity.
