title: A bridging hexazene (RNNNNNNR) ligand from reductive coupling of azides.
abstract: This communication reports the first examples of transition metal complexes containing an RNNNNNNR 2- ligand. Addition of 1-azidoadamantane to the diiron(I) synthon LRFeNNFeL R (L R = HC[C(R)N(2,6- iPr 2C 6H 3)] 2; R = methyl, tert-butyl) leads to the diiron complexes L RFe(mu-eta2:eta2-AdN6Ad)FeLR, which are surprisingly thermally stable. Magnetic, Mössbauer, and crystallographic data are consistent with pairs of high-spin iron(II) ions antiferromagnetically coupled through a dianionic AdN6Ad 2- bridge.
authors.affiliation: Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
authors.forename: Ryan E
authors.initials: RE
authors.lastname: Cowley
authors.forename: Jérôme
authors.initials: J
authors.lastname: Elhaïk
authors.forename: Nathan A
authors.initials: NA
authors.lastname: Eckert
authors.forename: William W
authors.initials: WW
authors.lastname: Brennessel
authors.forename: Eckhard
authors.initials: E
authors.lastname: Bill
authors.forename: Patrick L
authors.initials: PL
authors.lastname: Holland
mesh_terms: D000218:Adamantane / Q000031:analogs & derivatives*; D001386:Azides / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005296:Ferrous Compounds / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D015204:Spectroscopy, Mossbauer
chemical_list: D001386:Azides; D005296:Ferrous Compounds; D000218:Adamantane