title: Copper clusters built on bulky amidinate ligands: spin delocalization via superexchange rather than direct metal-metal bonding.
abstract: Entry into a new class of tetra- and dicopper clusters was assisted by a fine steric tuning of bulky amidinate ligands that provide spin-delocalizing superexchange pathways in class III mixed-valence clusters, the properties of which are best understood without invoking metal-metal bonding.
authors.affiliation: Department of Chemistry and School of Informatics, Indiana University, Bloomington, IN 47405, USA.
authors.forename: Xuan
authors.initials: X
authors.lastname: Jiang
authors.forename: John C
authors.initials: JC
authors.lastname: Bollinger
authors.forename: Mu-Hyun
authors.initials: MH
authors.lastname: Baik
authors.forename: Dongwhan
authors.initials: D
authors.lastname: Lee
mesh_terms: D000578:Amidines / Q000737:chemistry* / Q000378:metabolism; D003300:Copper / Q000737:chemistry* / Q000378:metabolism; D004578:Electron Spin Resonance Spectroscopy; D008024:Ligands; D015394:Molecular Structure
chemical_list: D000578:Amidines; D008024:Ligands; D003300:Copper