title: A linear Fe-O-Fe unit in bis(dibenzyldimethylammonium) mu-oxo-bis[tribromoferrate(III)].
abstract: The title compound, (C16H20N)2[Fe2Br6O], crystallizes with one dibenzyldimethylammonium cation and one half of a mu-oxo-bis[tribromoferrate(III)] anion in the asymmetric unit. The bridging oxo group is situated on an inversion centre, resulting in a linear conformation for the Fe-O-Fe unit. The iron(III) cations have tetrahedral geometry, with bond angles in the range 106.8 (1)-112.2 (1) degrees . The ion pairs are held together by Coulombic forces and C-H...Br hydrogen bonds. Each Br- anion forms one hydrogen bond. No C-H...O hydrogen bonds are found between the O atom in the Fe-O-Fe unit and surrounding counter-cations, consistent with the linear configuration of the Fe-O-Fe unit.
authors.affiliation: Department of Chemistry, University of Jyväskylä, FIN-40014 University of Jyväskylä, Finland. gibusi@st.iyu.fi
authors.forename: Sara
authors.initials: S
authors.lastname: Busi
authors.forename: Manu
authors.initials: M
authors.lastname: Lahtinen
authors.forename: Reijo
authors.initials: R
authors.lastname: Sillanpää
authors.forename: Kari
authors.initials: K
authors.lastname: Rissanen
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007501:Iron / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*
chemical_list: D000644:Quaternary Ammonium Compounds; C007316:dibenzyldimethylammonium; D007501:Iron; D010100:Oxygen