From: FX (
Date: Sat Apr 04 2020 - 11:10:20 CDT

Hi everyone,

Attached is an updated version of the CIF molfile plugin, which is improved in several ways:

- it can read multiple groups (frames) from the same CIF file, if they have the same number of atoms
- it ignores leading groups with zero atoms (usually used for comments, for example in files from the ICSD database)
- it can now write coordinates in CIF format

I’d love to get feedback from users about it, but I don’t really know how. If you use my 64-bit macOS build, you can find the compiled plugin here (, download it, and install it inside the app (put it inside the VMD app bundle, so its path is "VMD”)

Maybe once it gets into the official “alpha” builds from VMD, we can get more testing exposure. Not sure what the timeline is for a future build, or for a 1.9.4 release.

Best regards,

Dr. François-Xavier Coudert
Senior Researcher / Directeur de Recherche CNRS
at the Institut de Recherche de Chimie Paris
Professeur attaché ENS / PSL University