Hello Swasti Saxena !

Data activities in crystallography - These are the major public databases of crystal structure and related data. They are generally maintained by large organisations and are valuable resources for the benefit of science as a whole.

https://www.iucr.org/resources/data

Dear Oreci Escobar Da Silva

I already searched a lot in database but there are no file related to Carbon nanotubes. yeah you can find files of graphite, graphene, C60, fullerene and diamond....

http://www.cryst.ehu.es/

http://turin.nss.udel.edu/research/tubegenonline.html

http://www.crystallography.net/cod/result.php

type in "C" in chemistry search. I found your space group with similar lattice parameters. cheers.

Hello dear Swati

You can search materials project site for finding cif files.

Also you can draw the CNT in nanotube modeler software and export it as cif file,then edit it in cinema4d with epmv plugin.

Can anyone send the Multiwall CNT CIF file link? i am not able to find it.

Hello, u can use nanotube modeler to optimize it and save as cif file. Then open vesta to fully optimized again. U can save it and view it in avogadro