title: Neutral diiron(III) complexes with Fe₂(μ-E)₂ (E = O, S, Se) core structures: reactivity of an iron(I) dimer towards chalcogens.
abstract: Three neutral bis(μ-chalcogenido)diiron(III) complexes, [{(N,N'-Pipiso)Fe(μ-E)}2] (Pipiso(-) = [(DipN)2C(cis-2,6-Me2NC5H8)](-), (Dip = C6H3Pr(I)2-2,6; E = O, S or Se) have been prepared by reactions of the iron(I) dimer [{(μ-N,N'-Pipiso)Fe}2] with O2, S8 or Se∞. Treating the μ-selenido compound [{(N,N'-Pipiso)Fe(μ-Se)}2] with O2 cleanly generated its μ-oxo counterpart, [{(N,N'-Pipiso)Fe(μ-O)}2]. X-ray crystallographic analyses of the compounds showed them to possess Fe2(μ-E)2 core structures with distorted square planar (E = O) or tetrahedral (E = S or Se) iron coordination geometries. Magnetic, (57)Fe Mössbauer spectroscopic and computational studies indicate medium to strong antiferromagnetic coupling between the two high-spin Fe(III) ions in all three compounds.
authors.affiliation: School of Chemistry, Monash University, P.O. Box 23, Melbourne, Victoria 3800, Australia. cameron.jones@monash.edu.
authors.forename: Lea
authors.initials: L
authors.lastname: Fohlmeister
authors.forename: Kuduva R
authors.initials: KR
authors.lastname: Vignesh
authors.forename: Florian
authors.initials: F
authors.lastname: Winter
authors.forename: Boujemaa
authors.initials: B
authors.lastname: Moubaraki
authors.forename: Gopalan
authors.initials: G
authors.lastname: Rajaraman
authors.forename: Rainer
authors.initials: R
authors.lastname: Pöttgen
authors.forename: Keith S
authors.initials: KS
authors.lastname: Murray
authors.forename: Cameron
authors.initials: C
authors.lastname: Jones
mesh_terms: D018011:Chalcogens / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D019281:Dimerization; D007501:Iron / Q000737:chemistry*; D015204:Spectroscopy, Mossbauer
chemical_list: D018011:Chalcogens; D056831:Coordination Complexes; D007501:Iron