title: Mössbauer spectroscopy and X-ray diffraction study of Fe-labeled tetrachloroferrate(III)-based magnetic ionic liquids.
abstract: Four (57)Fe-labeled tetrachloroferrates(III) of organic cations (1-butyl-3-methylimidazolium, 1-allyl-3-methylimidazolium, 1-methyl-1-propylpyrrolidinium, tetraphenylphosphonium) were examined by temperature-dependent Mössbauer spectroscopy. The hyperfine and dynamic parameters of the iron(III) site were determined. Single crystal X-ray diffraction data of [Ph(4)P][FeCl(4)] were collected at four temperatures (295, 223, 173, and 123 K), and the dynamics of the iron atom inferred from the Mössbauer data and the single crystal U(i,j) parameters have been compared.
authors.affiliation: The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; E-Mail:  nowik@vms.huji.ac.il.
authors.forename: Rolfe H
authors.initials: RH
authors.lastname: Herber
authors.forename: Israel
authors.initials: I
authors.lastname: Nowik
authors.forename: Mirco E
authors.initials: ME
authors.lastname: Kostner
authors.forename: Volker
authors.initials: V
authors.lastname: Kahlenberg
authors.forename: Christoph
authors.initials: C
authors.lastname: Kreutz
authors.forename: Gerhard
authors.initials: G
authors.lastname: Laus
authors.forename: Herwig
authors.initials: H
authors.lastname: Schottenberger
mesh_terms: D018360:Crystallography, X-Ray; D052578:Ionic Liquids / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D007503:Iron Isotopes / Q000737:chemistry; D007553:Isotope Labeling; D008280:Magnetics; D008968:Molecular Conformation; D015204:Spectroscopy, Mossbauer
chemical_list: D052578:Ionic Liquids; D007503:Iron Isotopes; C017311:ferrate ion; D007501:Iron
references.citation: Chem Commun (Camb). 2008 Jan 28;(4):447-9
references.pmid: 18188463
references.citation: J Phys Condens Matter. 2010 Jul 28;22(29):296006
references.pmid: 21399323
references.citation: Chem Commun (Camb). 2009 Dec 7;(45):6922-4
references.pmid: 19904348
references.citation: Angew Chem Int Ed Engl. 2008;47(40):7635-8
references.pmid: 18759243
references.citation: Inorg Chem. 2001 May 7;40(10):2298-304
references.pmid: 11327906