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.
Structures of single cubanes (4a, 4b, 8a, 8b, 10a and 10b) shown with 50% probability ellipsoids and partial atom labeling schemes. Hydrogen atoms are omitted for clarity. 8a and 8b exist in dimeric forms involving two sodium atoms each coordinated with diethylether molecule of one half occupancy.
