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.
Classic oxy-heme “picket-fence” porphyrin complex, originally designed, generated, and crystallographically characterized by Collman and co-workers,397 is here depicted in a later X-ray structure determined by Li, Schulz, and Scheidt.433 Selected bond lengths and angles are shown; these parameters are very close to those previously reported by Collman and co-workers. Also, see the text.
