The synthesis, spectroscopy, and structure of three Cu(II) coordination compounds of the ligands bis(imidazol-2-yl)methylaminomethane (bimam) and bis(imidazol-2-yl)methylamine (bima) are described. The ligands bimam and bima both coordinate to Cu(II) ions in a didentate fashion. In all three complexes the copper(II) ions are coordinated in a distorted octahedral geometry. In [Cu(Hbimam)Cl-3](2)(H2O)(2) and [Cu(Hbima)Cl-3](2)(H2O)(2) each Cu(lI) ion is coordinated by two imidazole nitrogens and four chloride anions. The two mononuclear units are connected by two asymmetric chloride bridges. In [Cu(Hbimam)(2)Cl-2]Cl-2(H2O)(2) the Cu(II) ion is coordinated by four imidazole nitrogens and two chloride anions. In the present complexes the amine nitrogen donor of the ligand is hydronated and not coordinated to the Cu(II) ion. [(De)hydronated is the recommended IUPAC expression to indicate loss/addition of H+.] In all three complexes strong hydrogen bonding is observed between the amine nitrogen donor(s) and the axial coordinated chloride(s).