In the title compound, [CdI2(C14H12N2)], the molecule sits on a crystallographic twofold axis. The coordination sphere of the CdII atom is built of two symmetry-equivalent N atoms of one 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and two symmetry-equivalent I atoms, thus forming a distorted tetrahedral geometry. Inversion-related molecules interact along the c-axis direction by π -π stacking interactions between the phenanthroline ring systems, with centroid-centroid distances of 3.707 (9) and 3.597 (10) Å.
In the title complex, [CdBr2(C14H12N2)], the CdII ion is tetracoordinated by two N atoms of the bidentate 2,9-dimethyl-1,10-phenanthroline ligand and two bromide ions in a substantially distorted CdN2Br2 tetrahedral geometry. In the crystal, inversion dimers linked by pairs of weak C-H Br bonds generate R22(14) loops. Aromatic - stacking [shortest centroid-centroid separation = 3.633 (2) Å] interactions occur within, and also link, the dimers into chains propagating parallel to [100].
In the title complex, [CdBr2(C14H12N2)], the CdII ion is tetra¬coordinated by two N atoms of the bidentate 2,9-dimethyl-1,10-phenanthroline ligand and two bromide ions in a substanti¬ally distorted CdN2Br2 tetra¬hedral geometry. In the crystal, inversion dimers linked by pairs of weak C—H Br bonds generate R 2 2(14) loops. Aromatic π–π stacking [shortest centroid–centroid separation = 3.633 (2) Å] inter¬actions occur within, and also link, the dimers into chains propagating parallel to [100].