Figure 13.
The steric structures of three isomers of hydrogenated PMDA as determined by single-crystal X-ray diffraction method: (a) H-PMDA, (b) H′-PMDA, (c) H″-PMDA. Reproduced with permission from Elsevier [37].
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.