[Pw_forum] nanotubes symmetry

[zahra sadat naghavi]

Dear all !
Armchairs  and Zigzags  nanotubes have  24 symmetry oprerations.of course it is important that in which latticce they are located but in Hexagonal we expected 24 symmetrys for (6,6) but pw.x does not distinguish horizental mirror planes and talk about only 12.
can anybody help? 
 


      
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