Copper(II) Compounds with Amine Imine Ligands; Structures of (2,4,6,9,11-Pentamethyl-5,8-diazadodeca-4,8-diene-2,11-diamine)copper(II) Perchlorate and (2,4-Dimethyl-5,8,11- triazatridec-4-ene-2,13-diamine)copper(II) Perchlorate

Abstract

(2,4,6,9,11-Pentamethyl-5,8-diazadodeca-4,8-diene-2,11-diamine)copper(II) perchlorate, formed by reaction of (propane-1,2-diamine)copper(II) perchlorate with 4-amino-4-methylpentan-2-one, has the copper(II) ion in tetrahedrally twisted [±0·23(1) Å] square planar coordination by the tetradentate ligand, with a weak axial interaction with a perchlorate ion with Cu–O 2·64(1) Å [C₁₅H₃₂Cl₂CuN₄O₈, M_r 530·89, monoclinic, space group P2₁/n, a 9·938(7), b 13·591(7), c 17·149(9) Å, β 106·65(5)°, Z 4, R₁ 0·066 for 1096 reflections]. 2,4-Dimethyl-5,8,11-triazatridec-4-ene-2,13-diamine)copper(II) perchlorate, similarly formed from (triethylenetetramine)copper(II) perchlorate, has the copper(II) ion in square pyramidal coordination by the pentadentate ligand with the terminal primary amine group of the triamine residue in the axial site with Cu–N 2·189(5) Å. The basal plane of four nitrogen donor atoms is tetrahedrally twisted [±0·18(1) Å], with the copper(II) ion displaced from this plane by 0·27(1) Å [C₁₂H₂₉Cl₂CuN₅O₈, M_r 505·84, monoclinic, space group P2₁/c, a, 9·934(2), b, 15·719(3), c, 13·688(3) Å, β 107·83(3)°, Z 4, R₁ 0· 044 for 1485 reflections].