title: Monovalent iron in a sulfur-rich environment.
abstract: A series of low-coordinate, paramagnetic iron complexes in a tris(thioether) ligand environment have been prepared. Reduction of ferrous {[PhTt(tBu)]FeCl}2 [1; PhTt(tBu) = phenyltris((tert-butylthio)methyl)borate] with KC8 in the presence of PR3(R = Me or Et) yields the high-spin, monovalent iron phosphine complexes [PhTt(tBu)]Fe(PR3) (2). These complexes provide entry into other low-valent derivatives via ligand substitution. Carbonylation led to smooth formation of the low-spin dicarbonyl [PhTt(tBu)]Fe(CO)2 (3). Alternatively, replacement of PR 3 with diphenylacetylene produced the high-spin alkyne complex [PhTt(tBu)]Fe(PhCCPh) (4). Lastly, 2 equiv of adamantyl azide undergoes a 3 + 2 cycloaddition at 2, yielding high-spin dialkyltetraazadiene complex 5.
authors.affiliation: Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Mock
authors.forename: Codrina V
authors.initials: CV
authors.lastname: Popescu
authors.forename: Glenn P A
authors.initials: GP
authors.lastname: Yap
authors.forename: William G
authors.initials: WG
authors.lastname: Dougherty
authors.forename: Charles G
authors.initials: CG
authors.lastname: Riordan
mesh_terms: D000114:Acetylene / Q000737:chemistry; D002414:Cations, Monovalent; D007501:Iron / Q000737:chemistry*; D008958:Models, Molecular; D010084:Oxidation-Reduction; D013455:Sulfur / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002414:Cations, Monovalent; D013455:Sulfur; D007501:Iron; D000114:Acetylene