Ferric acetate is the acetate salt of the coordination complex [Fe3O(OAc)6(H2O)3]+ (OAc− is CH3CO2−). Commonly the salt is known as "basic iron acetate".[3] The formation of the red-brown complex was once used as a test for ferric ions.[4]
Basic iron acetate forms on treating aqueous solutions of iron(III) sources with acetate salts.[5] A typical precursor is freshly precipitated iron oxide/hydroxide, which is halide-free.[6]
Early work showed that the cation is trinuclear.[7] The Fe centres are equivalent, each being octahedral, being bound to six oxygen ligands, including a triply bridging oxide at the center of the equilateral triangle.[8] The compound was an early example of a molecular complex of iron that features an oxide ligand. The cation has idealized D3hsymmetry.
Reactions
The terminal aqua ligands on the trimetallic framework can be substituted with other ligands, such as pyridine and dimethylformamide. Many different salts are known by exchanging the anion, e.g. [Fe3(μ3-O)(OAc)6(H2O)3]Cl. Reduction of the cation affords the neutral mixed-valence derivative that contains one ferrous and two ferric centers.[3] Mixed metal species are known such as [Fe2CoO(OAc)6(H2O)3].[9]
Related compounds
Chromium(III), ruthenium(III), vanadium(III), and rhodium(III) form analogous compounds.[10] Iron(III) acetate (lacking the oxo ligand) has been claimed as a red coloured compound from the reaction of silver acetate and iron(III) chloride.[11]
Uses
Materials prepared by heating iron, acetic acid, and air, loosely described as basic iron acetates, are used as dyes and mordants.[3]
Iron acetate is often brushed upon untreated wood to give it an aged appearance.
^H. Lux (1963). "Basic Iron(III) Acetate". In Georg Brauer (ed.). Handbook of Preparative Inorganic Chemistry. p. 1508.
^Weinland, R.; Dinkelacker, P. (July 1909). "Über Salze einer Hexaacetato(formiato)-trichrombase. II". Berichte der Deutschen Chemischen Gesellschaft. 42 (3): 2997–3018. doi:10.1002/cber.19090420318.
^Figgis, B. N.; Robertson, G. B. (13 February 1965). "Crystal-Molecular Structure and Magnetic Properties of Cr3(CH3.COO)6OCl.5H2O". Nature. 205 (4972): 694–695. Bibcode:1965Natur.205..694F. doi:10.1038/205694a0. S2CID 4283321. This paper describes the isostructure chromium and iron compounds.
^Blake, Antony B.; Yavari, Ahmad; Hatfield, William E.; Sethulekshmi, C. N. (1985). "Magnetic and spectroscopic properties of some heterotrinuclear basic acetates of chromium(III), iron(III), and divalent metal ions". Journal of the Chemical Society, Dalton Transactions (12): 2509. doi:10.1039/DT9850002509.
^Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, ISBN0-12-352651-5
iron, acetate, ferric, acetate, acetate, salt, coordination, complex, fe3o, ch3co2, commonly, salt, known, basic, iron, acetate, formation, brown, complex, once, used, test, ferric, ions, namesiupac, name, iron, acetateother, names, basic, iron, acetate, iron,. Ferric acetate is the acetate salt of the coordination complex Fe3O OAc 6 H2O 3 OAc is CH3CO2 Commonly the salt is known as basic iron acetate 3 The formation of the red brown complex was once used as a test for ferric ions 4 Iron III acetate 1 NamesIUPAC name iron III acetateOther names basic iron III acetate iron III oxyacetate iron III AcetateIdentifiersCAS Number 1834 30 6 Y3D model JSmol Interactive imagecoordination complex Interactive imageChemSpider 144555PubChem CID 164887UNII CZZ8832SI5 YInChI InChI 1 3C2H4O2 Fe c3 1 2 3 4 h3 1H3 H 3 4 q 3 p 3Key PVFSDGKDKFSOTB DFZHHIFOAZSMILES CC O O CC O O CC O O Fe 3 coordination complex o1c C o Fe 3 6 O23 OH2 o c C o4 o c C o Fe 3 24 OH2 o c C o5 o c C o Fe 3 135 OH2 o c C o6PropertiesChemical formula C14H27Fe3O18Molar mass 650 9 g molAppearance brownish red powderSolubility in water InsolubleSolubility soluble in ethanol 2 Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox references Contents 1 Structure and synthesis 2 Reactions 3 Related compounds 4 Uses 5 See also 6 ReferencesStructure and synthesis EditBasic iron acetate forms on treating aqueous solutions of iron III sources with acetate salts 5 A typical precursor is freshly precipitated iron oxide hydroxide which is halide free 6 Early work showed that the cation is trinuclear 7 The Fe centres are equivalent each being octahedral being bound to six oxygen ligands including a triply bridging oxide at the center of the equilateral triangle 8 The compound was an early example of a molecular complex of iron that features an oxide ligand The cation has idealized D3h symmetry Reactions EditThe terminal aqua ligands on the trimetallic framework can be substituted with other ligands such as pyridine and dimethylformamide Many different salts are known by exchanging the anion e g Fe3 m3 O OAc 6 H2O 3 Cl Reduction of the cation affords the neutral mixed valence derivative that contains one ferrous and two ferric centers 3 Mixed metal species are known such as Fe2CoO OAc 6 H2O 3 9 Related compounds EditChromium III ruthenium III vanadium III and rhodium III form analogous compounds 10 Iron III acetate lacking the oxo ligand has been claimed as a red coloured compound from the reaction of silver acetate and iron III chloride 11 Uses EditMaterials prepared by heating iron acetic acid and air loosely described as basic iron acetates are used as dyes and mordants 3 Iron acetate is often brushed upon untreated wood to give it an aged appearance See also EditIron II acetate Cobalt II acetate Rhodium II acetate Manganese III acetate Chromium III acetateReferences Edit Lide David R ed 2006 CRC Handbook of Chemistry and Physics 87th ed Boca Raton FL CRC Press pp 4 63 ISBN 0 8493 0487 3 Iron III Acetate EndMemo Retrieved 18 April 2015 a b c J Burgess M V Twigg 2005 R Bruce King J Wiley eds Encyclopedia of inorganic chemistry 2nd ed New York Wiley ISBN 978 0 470 86078 6 H Brearley F Ibbotson 1902 The Analysis of Steel Works Materials London New York Longmans Green Archived from the original on 18 April 2015 W Simon March 2007 Manual of Chemistry p 474 ISBN 978 1406733358 H Lux 1963 Basic Iron III Acetate In Georg Brauer ed Handbook of Preparative Inorganic Chemistry p 1508 Weinland R Dinkelacker P July 1909 Uber Salze einer Hexaacetato formiato trichrombase II Berichte der Deutschen Chemischen Gesellschaft 42 3 2997 3018 doi 10 1002 cber 19090420318 Figgis B N Robertson G B 13 February 1965 Crystal Molecular Structure and Magnetic Properties of Cr3 CH3 COO 6OCl 5H2O Nature 205 4972 694 695 Bibcode 1965Natur 205 694F doi 10 1038 205694a0 S2CID 4283321 This paper describes the isostructure chromium and iron compounds Blake Antony B Yavari Ahmad Hatfield William E Sethulekshmi C N 1985 Magnetic and spectroscopic properties of some heterotrinuclear basic acetates of chromium III iron III and divalent metal ions Journal of the Chemical Society Dalton Transactions 12 2509 doi 10 1039 DT9850002509 Holleman Arnold Frederik Wiberg Egon 2001 Wiberg Nils ed Inorganic Chemistry translated by Eagleson Mary Brewer William San Diego Berlin Academic Press De Gruyter ISBN 0 12 352651 5 Paul Ram C Narula Ramesh C Vasisht Sham K December 1978 Iron III acetates Transition Metal Chemistry 3 1 35 38 doi 10 1007 BF01393501 S2CID 94447648 Retrieved from https en wikipedia org w index php title Iron III acetate amp oldid 1110286559, wikipedia, wiki, book, books, library,
