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.
Schematic showing the crystal structures of A. Mn3O4, which consists of octahedral (light blue) and tetragonal (dark blue) Mn sites, and B. Mn+-birnessite, which consists of sheets of edge-sharing MnO6 octahedra with cations and water intercatalated into the interlayer space.
