title: Crystal structure of (perchlorato-κO)(1,4,7,10-tetra-aza-cyclo-dodecane-κ4N)copper(II) perchlorate.
abstract: The crystal structure of the title salt, [Cu(ClO4)(C8H20N4)]ClO4, is reported. The CuIIion exhibits a square-pyramidal geometry and is coordinated by the four N atoms of the neutral 1,4,7,10-tetra-aza-cyclo-dodecane (cyclen) ligand and an O atom from one perchlorate anion, with the second perchlorate ion hydrogen-bonded to one of the amine N atoms of the cyclen ligand. Additional N-H⋯O hydrogen bonds between the amine H atoms and the coordinating and non-coordinating perchlorate groups create a three-dimensional network structure. Crystals were grown from a concentrated methanol solution at ambient temperature, resulting in no co-crystallization of solvent.
authors.affiliation: Department of Chemistry, University of Alabama, 250 Hackberry Lane, Tuscaloosa, AL 35487-0336, USA.
authors.forename: Jessica L
authors.initials: JL
authors.lastname: Gray
authors.affiliation: Department of Chemistry, University of Alabama, 250 Hackberry Lane, Tuscaloosa, AL 35487-0336, USA.
authors.forename: Deidra L
authors.initials: DL
authors.lastname: Gerlach
authors.affiliation: Department of Chemistry, University of Alabama, 250 Hackberry Lane, Tuscaloosa, AL 35487-0336, USA.
authors.forename: Elizabeth T
authors.initials: ET
authors.lastname: Papish
keywords: copper(II); crystal structure; cyclen; perchlorate