title: Synthesis and complexation of "back-to-back" capped bis-dioxocyclams.
abstract: Pyridine-capped 5,12-dioxocyclams were coupled "back-to-back" directly, with one or two intervening phenyl groups, an ethynyl group, or a diazo group via Suzuki, Sonogashira, or reductive coupling of the 4-nitropyridine monocyclam. These bis-dioxocyclams linked through extended pi-conjugated systems were complexed to copper(II) and cobalt(III), producing bis-metal complexes which were characterized spectroscopically and electrochemically. These studies gave little evidence for electronic communication between metal centers across the pi-conjugated linkers.
authors.affiliation: Department of Chemistry, Colorado State University, Fort Collins, 80523, USA.
authors.forename: Jun Mo
authors.initials: JM
authors.lastname: Gil
authors.forename: Scott
authors.initials: S
authors.lastname: David
authors.forename: Angela L
authors.initials: AL
authors.lastname: Reiff
authors.forename: Louis S
authors.initials: LS
authors.lastname: Hegedus
mesh_terms: D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004563:Electrochemistry; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D008024:Ligands; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D011725:Pyridines / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: D006571:Heterocyclic Compounds; D008024:Ligands; D009942:Organometallic Compounds; D011725:Pyridines; C034036:dioxocyclam; D003300:Copper