trans-Dichlorotetrabenzimidazolecadmium(II) tetrabenzimidazole: a three-dimensional supramolecular structure built from C—H⋯π, N—H⋯Cl and N—H⋯N hydrogen bonds. - Si-Si Feng; Li-Ping Lu; Miao-Li Zhu; Li Li; Shu-Xia Wang (Acta Crystallographica: Section C (Wiley-Blackwell), 2006)