[N,N'-BIS(3-AMINOPROPYL)-TRANS-1,2-CYCLO-HEXANEDIAMINE-N,N',N'',N''']DI(PERCHLORATO-O)COPPER(II)

The Cu(II) ion of the title complex, [Cu(ClO4)2(C12H28N4)], is six-coordinated with four N atoms of the tetradentate ligand on the equatorial plane and two perchlorato O atoms in axial positions. The two asymmetric donor N atoms have the same R or S configuration, The two terminal six-membered chelate rings are in stable chair forms and the central five-membered chelate ring is in a stable gauche form. The cyclohexane ring on the central chelate ring is in a stable chair form. The hydrogen bonds between the NH and NH2 groups and the perchlorate O atoms help stabilize the crystal structure.