On complexation with (en)Pd(NO3)2, tetrakis(3,5-pyridine) ligand gives two isomeric coordination nanotubes, which are in slow equilibrium despite the presence of sixteen Pd–N bonds in the tube framework.
                                    在与(en)Pd(
NO3)2复合时,四取代(3,5-
吡啶)
配体形成两种异构的配位纳米管,尽管管框架中存在十六个Pd–N键,但它们仍处于缓慢平衡状态。