title: Synthesis and crystal structure of [2,7,12-trimethyl-3,7,11,17-tetra-aza-bicyclo-[11.3.1]hepta-deca-1(17),13,15-triene-κ(4) N]copper(II) bis-(perchlorate).
abstract: The title copper(II) complex of a pyridine-containing macrocycle (PyMAC), [Cu(C16H28N4)](ClO4)2, has been prepared. The crystal structure reveals the Cu(II) atom to be octahedrally coordinated by a tetradentate aminopyridine macrocyclic ligand surrounding the metal cation in a square-planar geometry. Two weakly bound perchlorate counter-ions occupy the axial sites above and below the macrocyclic plane. The crystal studied was refined as a two-component pseudo-merohedral twin; the refined fractional contribution of the minor component is 38.77 (8).
authors.affiliation: Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines, Manila 1000, Philippines.
authors.forename: Edward Gabrielle V
authors.initials: EG
authors.lastname: Hilvano
authors.affiliation: Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA.
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
authors.affiliation: Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines, Manila 1000, Philippines.
authors.forename: Inno A
authors.initials: IA
authors.lastname: Emnacen
authors.affiliation: Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA.
authors.forename: Elena V
authors.initials: EV
authors.lastname: Rybak-Akimova
authors.affiliation: Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines, Manila 1000, Philippines.
authors.forename: Junie B
authors.initials: JB
authors.lastname: Billones
authors.affiliation: Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines, Manila 1000, Philippines.
authors.forename: Maria Constancia O
authors.initials: MC
authors.lastname: Carrillo
authors.affiliation: Bruker AXS Inc., 5465 E. Cheryl Parkway, Madison, WI 53711, USA.
authors.forename: Bruce C
authors.initials: BC
authors.lastname: Noll
authors.affiliation: Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines, Manila 1000, Philippines.
authors.forename: Voltaire G
authors.initials: VG
authors.lastname: Organo
keywords: copper complex; crystal structure; pyridine macrocycles