ZGNR with withds from 4 to 9

[Luis M. Villamagua C.]

I am reading a paper where the autor says that he constructed ZGNR with widhts ranging from 4 to 9 accross the ribbon. VNL is not allowing me to do that. It only allows me to create zGNR with odd number of lines accross the ribbon, for example 4, 6, 8, 10, etc.

Am I doing something wrong, or am I missunderstanding what the author on this papers is saying?

Regards,
Luis

[Anders Blom]

The width in the paper could be in terms of "pairs" of C atoms. It is not possible to have a zigzag ribbon with an odd number of C atoms across - try by removing one layer of C atoms and you'll see.