title: Strong ferromagnetic metal-ligand exchange in a nickel bis(3,5-dipyridylverdazyl) complex.
abstract: A new 1,5-dipyridyl verdazyl, synthesized from the corresponding dipyridyl hydrazone, coordinates nickel(ii) to form a structurally characterized, pseudooctahedral complex analogous to Ni(terpy)(2)(2+). The unusually short Ni-verdazyl distance results in strong ferromagnetic exchange (J(Ni-rad) = +300, J(rad-rad) = +160 cm(-1)) between all three paramagnetic species along with a metal-ligand charge transfer band in the electronic spectrum.
authors.affiliation: Department of Chemistry, San José State University, One Washington Square, San José, CA 95192, USA. dbrook@science.sjsu.edu
authors.forename: David J R
authors.initials: DJ
authors.lastname: Brook
authors.forename: Cardius J
authors.initials: CJ
authors.lastname: Richardson
authors.forename: Benjamin C
authors.initials: BC
authors.lastname: Haller
authors.forename: Michael
authors.initials: M
authors.lastname: Hundley
authors.forename: Gordon T
authors.initials: GT
authors.lastname: Yee
mesh_terms: D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004578:Electron Spin Resonance Spectroscopy; D008024:Ligands; D008280:Magnetics; D008670:Metals / Q000737:chemistry*; D008968:Molecular Conformation; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D008670:Metals; D009942:Organometallic Compounds; D009532:Nickel