I am new to Avogadro, I believe the software is capable of creating the whole structure if just provided with the symmetry atoms and assigning the symmetry of the molecule. The output can be seen in the MacMolplt. I tried doing it but did not get any success, I would appreciate any help, to walk me through the steps. I am trying to model Ni(COD)2.
PS: I am not a chemist, a computaional person.