7783-50-8

Usage

Uses

Used in Chemical Synthesis:
Iron(III) fluoride is used as a precursor for the preparation of other iron compounds, facilitating the creation of a diverse range of chemical products.
Used in Catalysts:
In chemical reactions, Iron(III) fluoride is utilized as a catalyst to enhance the rate and efficiency of these processes.
Used in Manufacturing of Reagents:
Iron(III) fluoride is employed in the production of reagents, which are essential for various laboratory and industrial applications.
Used in Pharmaceutical Industry:
Iron(III) fluoride is used in the manufacturing process of pharmaceuticals, contributing to the development of medications and treatments.
Used in Production of Fluorides:
Iron(III) fluoride plays a role in the production of fluorides, which have applications in various industries, including dental care.
Used in Dental Care:
Iron(III) fluoride has been investigated for its potential applications in dental care, suggesting its use in the development of products that promote oral health.
Used in Treatment of Iron Deficiency:
Research is being conducted on the potential of Iron(III) fluoride as a treatment for iron deficiency, indicating its use in medical therapies to address this condition.
It is crucial to handle Iron(III) fluoride with caution due to its toxic nature if ingested or inhaled, necessitating adherence to proper safety procedures during its use.

InChI:InChI=1/2FH.Fe/h2*1H;/q;;+2/p-2

Synthetic route

iron(III) oxide → iron(III) fluoride (7783-50-8)

Conditions	Yield
With F reaction of Fe2O3 with F on slight heating with flaming up; formation of FeF3;;

iron(III) oxide → iron(III) fluoride (7783-50-8)

Conditions	Yield
With F reaction of Fe2O3 with F on slight heating with flaming up; formation of FeF3;;

iron(III) oxide + ammonium hydrogen fluoride → iron(II) fluoride + iron(III) fluoride (7783-50-8) + hydrogen fluoride (7664-39-3) + nitrogen (7727-37-9) + ammonia (7664-41-7)

Conditions	Yield
In neat (no solvent) byproducts: H2O; heating up to 600°C; detd. by X-ray diffraction;

iron(III) oxide + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8) + water (7732-18-5)

iron(III) oxide + ammonium hydrogen fluoride → iron(II) fluoride + iron(III) fluoride (7783-50-8) + hydrogen fluoride (7664-39-3) + nitrogen (7727-37-9) + ammonia (7664-41-7)

Conditions	Yield
In neat (no solvent) byproducts: H2O; heating up to 600°C; detd. by X-ray diffraction;

chlorine (7782-50-5) + iron (7439-89-6) + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heating (3 h, 400°C);

hydrogen fluoride (7664-39-3) + iron(III) chloride (7705-08-0) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) decompn. with gaseous HF, formation of FeF3;;
In neat (no solvent) reaction in coldness to amorphous FeF3; at 1000 °C formation of crystalline FeF3;;
In neat (no solvent) decompn. with gaseous HF, formation of FeF3;;

iron(III) chloride (7705-08-0) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With alkali fluoride In water byproducts: iron(III) fluoro anion;

iron(III) oxide + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8) + water (7732-18-5)

iron(III) chloride (7705-08-0) + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) reaction of FeCl3 with F2 to FeF3 at elevated temp.;;
In not given reaction of FeCl3 with F2;;
In not given reaction of FeCl3 with F2;;
In neat (no solvent) reaction of FeCl3 with F2 to FeF3 at elevated temp.;;

iron(II) fluoride + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In water
In neat (no solvent) in Monel or glassy carbon or corundum vessel; at 100-370°C for 3h in F2 flow; elem. anal.;
In neat (no solvent) fluorination of mixt. of FeF2 and FeF3 with F2 (350 - 400°C);

chlorine (7782-50-5) + iron (7439-89-6) + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heating (3 h, 400°C);

iron(III) oxide + ammonium hydrogen fluoride → iron(III) fluoride (7783-50-8)

Conditions	Yield
In solid byproducts: H2O, HF, NH3; react. product: (NH4)3FeF6 at 180°C, NH4FeF4 at 320°C, FeF3 at 430°C; XRD, IR, chem. anal.;

iron(III) oxide + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heated in a stream of HF;; contaminated by red oxyfluoride that can be removed by washing with warm dild. aq. HCl;;
In neat (no solvent) heated in a stream of HF;; contaminated by red oxyfluoride that can be removed by washing with warm dild. aq. HCl;;

hydrogen fluoride (7664-39-3) + iron(III) chloride (7705-08-0) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) decompn. with gaseous HF, formation of FeF3;;
In neat (no solvent) reaction in coldness to amorphous FeF3; at 1000 °C formation of crystalline FeF3;;
In neat (no solvent) decompn. with gaseous HF, formation of FeF3;;

iron(III) oxide + sulfur(VI) hexafluoride (2551-62-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) 710°C; elem. anal.;
710°C; elem. anal.;

iron(III) chloride (7705-08-0) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With alkali fluoride In water byproducts: iron(III) fluoro anion;

hydrogen fluoride (7664-39-3) + water (7732-18-5) + iron (7439-89-6) → iron(III) fluoride (7783-50-8) + iron(II) fluoride * 4 H2O

Conditions	Yield
In water hydrothermal synthesis;	A 0% B n/a

iron(II) oxide (1345-25-1) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With fluorine on slight warming of FeO and fluorine vigorous glowing and formation of iron fluoride;;

iron(III) chloride (7705-08-0) + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) reaction of FeCl3 with F2 to FeF3 at elevated temp.;;
In not given reaction of FeCl3 with F2;;
In not given reaction of FeCl3 with F2;;
In neat (no solvent) reaction of FeCl3 with F2 to FeF3 at elevated temp.;;

xenon difluoride (13709-36-9) + iron (7439-89-6) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) a mixt. of iron filings and XeF2 was heated at 500°C in a nickelvessel;

iron(II,III) oxide → iron(III) fluoride (7783-50-8)

Conditions	Yield
With fluorine In neat (no solvent) react. at dark red heat; formation of iron fluoride;;
With F2 In neat (no solvent) react. at dark red heat; formation of iron fluoride;;

iron(II) fluoride + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In water
In neat (no solvent) in Monel or glassy carbon or corundum vessel; at 100-370°C for 3h in F2 flow; elem. anal.;
In neat (no solvent) fluorination of mixt. of FeF2 and FeF3 with F2 (350 - 400°C);

iron(III) oxide + ammonium hydrogen fluoride → iron(III) fluoride (7783-50-8)

Conditions	Yield
In solid byproducts: H2O, HF, NH3; react. product: (NH4)3FeF6 at 180°C, NH4FeF4 at 320°C, FeF3 at 430°C; XRD, IR, chem. anal.;

iron boride + fluorine → iron(III) fluoride (7783-50-8) + boron trifluoride (7637-07-2)

iron(III) oxide + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heated in a stream of HF;; contaminated by red oxyfluoride that can be removed by washing with warm dild. aq. HCl;;
In neat (no solvent) heated in a stream of HF;; contaminated by red oxyfluoride that can be removed by washing with warm dild. aq. HCl;;

iron (7439-89-6) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With H2O2 In hydrogen fluoride aq. HF; dissolving of pure iron powder in 48% HF, oxidatn. of the product by H2O2 in a strong acid medium;
fluorination of metallic Fe-powder;

hydrogen fluoride (7664-39-3) + iron (7439-89-6) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With F2 In neat (no solvent) HF then F2-stream;

iron(III) oxide + sulfur(VI) hexafluoride (2551-62-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) 710°C; elem. anal.;
710°C; elem. anal.;

iron (7439-89-6) + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With tungsten In neat (no solvent) byproducts: FeF2; in calorimetric bomb; iron combusted in fluorine; XRD; TG; elem.anal.; cromy.; calorimetry;
In not given reaction of Fe with F2;;
Fe-powder, F2/N2 for 3 d at 300°C, cooled, powdered, pure F2 for 2 d at 400°C;
In not given reaction of Fe with F2;;

iron(III) fluoride * 99 H2O + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heated in a stream of HF;; by washing with warm dild. aq. HCl contaminating red oxyfluoride can be removed;;
In neat (no solvent) heated in a stream of HF;; by washing with warm dild. aq. HCl contaminating red oxyfluoride can be removed;;

ferric hydroxide + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In hydrogen fluoride Fe(OH)3 dissolved in aq. HF and heated;; not isolated;;
In hydrogen fluoride aq. HF; Fe(OH)3 dissolved in aq. HF and heated;; not isolated;;

hydrogen fluoride (7664-39-3) + water (7732-18-5) + iron (7439-89-6) → iron(III) fluoride (7783-50-8) + iron(II) fluoride * 4 H2O

Conditions	Yield
In water hydrothermal synthesis;	A 0% B n/a

Iron(III) nitrate nonahydrate + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) at 500°C for 2 days; powder XRD;
In water excess of aq. HF, evapn. (60°C), slow dehydration (anhydrous HF stream, 750°C, 6 h);

iron(II) oxide (1345-25-1) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With fluorine on slight warming of FeO and fluorine vigorous glowing and formation of iron fluoride;;

iron(III) fluoride trihydrate + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heating (6 h, 750°C, HF stream);

iron(II) fluoride + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With nitric acid In water oxidized by HNO3 with excess of HF;; not isolated;;
With HNO3 In water oxidized by HNO3 with excess of HF;; not isolated;;

iron(III) fluoride * 99 H2O → iron(III) fluoride (7783-50-8)

Conditions	Yield
With ammonium fluoride; hydrogen fluoride In further solvent(s) FeF3*(x)H2O given into molten NH4F; heating in an inert gas stream gave an amorphous FeF3; heating in a stream of HF at 1000 °C formed crystals under partial sublimation;; contaminating red oxyfluoride can be removed by washing with warm dild. aq. HCl;;
With NH4F; HF In further solvent(s) FeF3*(x)H2O given into molten NH4F; heating in an inert gas stream gave an amorphous FeF3; heating in a stream of HF at 1000 °C formed crystals under partial sublimation;; contaminating red oxyfluoride can be removed by washing with warm dild. aq. HCl;;

xenon difluoride (13709-36-9) + iron (7439-89-6) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) a mixt. of iron filings and XeF2 was heated at 500°C in a nickelvessel;

iron(III) fluoride trihydrate → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) byproducts: H2O; under HF stream, 750°C;
In neat (no solvent) at 120℃; for 48h;

iron(III) fluoride trihydrate + sulfur(VI) hexafluoride (2551-62-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) 650°C; elem. anal.;
650°C; elem. anal.;

iron(II,III) oxide → iron(III) fluoride (7783-50-8)

Conditions	Yield
With fluorine In neat (no solvent) react. at dark red heat; formation of iron fluoride;;
With F2 In neat (no solvent) react. at dark red heat; formation of iron fluoride;;

iron(II) fluoride + oxygen (80937-33-3) → iron(III) oxide + iron(III) fluoride (7783-50-8) + iron oxofluoride

Conditions	Yield
In solid dried oxygen passed for 30 min over FeF2 sample mounted in platinum device at 620-800°C; powder X-ray diffraction anal.;	A n/a B n/a C 0%

uranium hexafluoride (7783-81-5) → iron(III) fluoride (7783-50-8) + FeF3*U2F9 + UF(4-4.5)

Conditions	Yield
With steel corrosion of steel by UF6 at 120-400°C;
With steel corrosion of steel by UF6 at 120-400°C;

iron boride + fluorine → iron(III) fluoride (7783-50-8) + boron trifluoride (7637-07-2)

iron(II) fluoride + nitrogen(II) oxide (10102-43-9) → iron(III) fluoride (7783-50-8) + iron(III) oxide

Conditions	Yield
In neat (no solvent) byproducts: N2; heating in NO stream to 600°C; X-ray diffraction;

iron (7439-89-6) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With H2O2 In hydrogen fluoride aq. HF; dissolving of pure iron powder in 48% HF, oxidatn. of the product by H2O2 in a strong acid medium;
fluorination of metallic Fe-powder;

hydrogen fluoride (7664-39-3) + iron (7439-89-6) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With F2 In neat (no solvent) HF then F2-stream;

iron(III) fluoride (7783-50-8) + tetraphenylphosphonium iodide (2065-67-0) → 2(C6H5)4P(1+)*{Fe2S12}(2-)=((C6H5)4P)2{Fe2S12}

Conditions	Yield
With H2S In methanol; triethylamine; N,N-dimethyl-formamide stirring mixt. of FeF3 and org. compd. in MeOH and DMF (2 min), addn. of Et3N, introduction of H2S (6 l/h); filtn., addn. of diethyl ether, standing (2-3 d, room temp., Ar atmosphere), filtn. washing (isopropanol, CS2 and Et2O), drying (air); elem. anal.;	52%

iron (7439-89-6) + fluorine (7782-41-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With tungsten In neat (no solvent) byproducts: FeF2; in calorimetric bomb; iron combusted in fluorine; XRD; TG; elem.anal.; cromy.; calorimetry;
In not given reaction of Fe with F2;;
Fe-powder, F2/N2 for 3 d at 300°C, cooled, powdered, pure F2 for 2 d at 400°C;
In not given reaction of Fe with F2;;

iron(III) fluoride * 99 H2O + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heated in a stream of HF;; by washing with warm dild. aq. HCl contaminating red oxyfluoride can be removed;;
In neat (no solvent) heated in a stream of HF;; by washing with warm dild. aq. HCl contaminating red oxyfluoride can be removed;;

ferric hydroxide + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In hydrogen fluoride Fe(OH)3 dissolved in aq. HF and heated;; not isolated;;
In hydrogen fluoride aq. HF; Fe(OH)3 dissolved in aq. HF and heated;; not isolated;;

hydrogenchloride (7647-01-0) + iron(III) fluoride (7783-50-8) → iron(III) chloride (7705-08-0)

Conditions	Yield
In neat (no solvent) byproducts: HF; heated in a stream of HCl at red heat;;

Iron(III) nitrate nonahydrate + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) at 500°C for 2 days; powder XRD;
In water excess of aq. HF, evapn. (60°C), slow dehydration (anhydrous HF stream, 750°C, 6 h);

iron(III) fluoride trihydrate + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) heating (6 h, 750°C, HF stream);

iron(II) fluoride + hydrogen fluoride (7664-39-3) → iron(III) fluoride (7783-50-8)

Conditions	Yield
With nitric acid In water oxidized by HNO3 with excess of HF;; not isolated;;
With HNO3 In water oxidized by HNO3 with excess of HF;; not isolated;;

iron(III) fluoride * 99 H2O → iron(III) fluoride (7783-50-8)

Conditions	Yield
With ammonium fluoride; hydrogen fluoride In further solvent(s) FeF3*(x)H2O given into molten NH4F; heating in an inert gas stream gave an amorphous FeF3; heating in a stream of HF at 1000 °C formed crystals under partial sublimation;; contaminating red oxyfluoride can be removed by washing with warm dild. aq. HCl;;
With NH4F; HF In further solvent(s) FeF3*(x)H2O given into molten NH4F; heating in an inert gas stream gave an amorphous FeF3; heating in a stream of HF at 1000 °C formed crystals under partial sublimation;; contaminating red oxyfluoride can be removed by washing with warm dild. aq. HCl;;

iron(III) fluoride (7783-50-8) + ethylenediamine (107-15-3) → ethylenediammonium iron(III) fluoride

Conditions	Yield
With hydrogen fluoride In water
With HF In water

iron(III) fluoride trihydrate → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) byproducts: H2O; under HF stream, 750°C;
In neat (no solvent) at 120℃; for 48h;

iron(III) fluoride trihydrate + sulfur(VI) hexafluoride (2551-62-4) → iron(III) fluoride (7783-50-8)

Conditions	Yield
In neat (no solvent) 650°C; elem. anal.;
650°C; elem. anal.;

Upstream product

• 7782-50-5 chlorine 
• 7439-89-6 iron 
• 7782-41-4 fluorine 
• 7664-39-3 hydrogen fluoride 
• 7705-08-0 iron(III) chloride 
• 2551-62-4 sulfur(VI) hexafluoride 
• 7732-18-5 water 
• 1345-25-1 iron(II) oxide 
• 13709-36-9 xenon difluoride 
• 80937-33-3 oxygen 
• 7783-81-5 uranium hexafluoride 
• 10102-43-9 nitrogen(II) oxide 
• 6047-25-2 iron(II) oxalate dihydrate 

Downstream Products

• 7705-08-0 iron(III) chloride 
• 7637-07-2 boron trifluoride 
• 7664-39-3 hydrogen fluoride 
• 7439-89-6 iron 
• 7553-56-2 iodine 
• 15843-42-2 ferric oxalate 
• 7783-40-6 magnesium fluoride 
• 1333-74-0 hydrogen 
• 15274-99-4 Na⁽¹⁺⁾*FeF₄^(1-)=NaFeF₄ 
• 13815-28-6 (NH4)3FeF6, high temperature, cubic 

Relevant academic research and scientific papers

Reactions of oxides of some 3d elements with ammonium hydrogen difluoride

Reactions of iron, manganese(II), manganese(IV), copper, and zinc oxides with ammonium hydrogen difluoride were studied by thermogravimetry, X-ray phase analysis, IR spectrometry, and chemical analysis.

The first oligomeric anions of fluoro-litho metallates with octahedra sandwich motive: Cs4K{[F3MIIIF3]Li[F 3MIIIF3]}, MIII = Ga, Fe

Colourless single crystals of Cs4K{Li[Ga2F12]} (A) and Cs4K{Li[Fe2F12]} (B) have been obtained by solid state reaction from intimate mixtures of the corresponding binary fluorides (Pt-tube, 750°C, 40 d). The trigonal unit cells with (A) a = 631,3(1) pm; c = 3059,9(6) pm and (B) a = 635,0(1) pm; c = 3089,2(7) pm, respectively (Z = 3, Guinier-Simon data, Cu-Kα1), are confirmed by single crystal investigations. The compounds crystalize isostructural in the space group R3m (No. 166). The structures were determined using four-circle diffractometer data (Siemens AED 2) with (A) R = 2.95%, 3627 Io and (B) R = 1.86%, 4179 Io, respectively (SHELX-76), and are characterized by triplets of facesharing octahedra parallel [00.1] with the cation-sequence MIII-Li-MIII, six of which are connected by [KF6]-octahedra via common corners and each triplet is surrounded by six different [KF6]-octahedra. The structure is completed by Cs+ filling the cavities. The Madelung Part of Lattice Energy (MAPLE), Mean Fictive Ionic Radii (MEFIR) and Effective Coordination Numbers (ECoN) are calculated and compared. The classification as lithometallate could be verified by a new MAPLE concept. The Charge Distribution (CHARDI) was calculated and compared with the results according to 'bond length-bond strength'. Johann Ambrosius Barth 1996.

Moessbauer spectroscopy and magnetic properties of Ba5Feiii3-xMii19-x (M = Fe, Cu)

The Moessbauer spectra of three phases of the tetragonal solid solution Ba5FeIII3-xMIIxF 19-x (M = Fe, Cu) obtained by substitution of Fe3+ by M2+ ions, have been studied, as well as their magnetic properties. A mechanism of substitution of the Fe3+ cations is proposed according to the Moessbauer data. These compounds are paramagnetic until 4.2 K, with very weak antiferromagnetic interactions below 30-40 K.

Enhancing cycling performance of FeF3 cathode by introducing a lightweight high conductive adsorbable interlayer

Iron fluorides, as a kind of high specific capacity conversion-type cathode materials for lithium rechargeable batteries, are attracting an increasing number of researchers. However, their practical applications are hindered by the poor electrical conductivity and the volume effect during cycling. In this work, a lightweight porous hollow carbon nanofiber (PHCNF) interlayer is proposed to coat on the original FeF3 cathode to solve these problems. This interlayer is synthesized through a facile carbonizing-activating process using polypyrrole (PPy) as raw material, and plays a difunctional role in trapping the escaped FeF3 particles and improving the electrical conductivity of electrode. By introducing the high conductive coating layer, an extremely high specific capacity of 217 mAh g?1 for 40 cycles in the 2–4.5 V region is achieved, which is close to the theoretical specific capacity of 237 mAh g?1 for FeF3. Also, a superior power capability is retained delivering a reversible specific capacity of 193 mAh g?1 at 200 mA g?1 and 101 mAh g?1 even at 1000 mA g?1.

Structure and electrochemical performance of FeF3/V2O5 composite cathode material for lithium-ion battery

Orthorhombic structure FeF3 was synthesized by a liquid-phase method using FeCl3, NaOH and HF solution as starting materials, and the FeF3/V2O5 composites were prepared by milling the mixture of as-pr

MOSSBAUER SPECTROSCOPY STUDY OF CRYSTALLIZATION OF AMORPHOUS IRON (III) FLUORIDES: INFLUENCE OF EXPERIMENTAL CONDITIONS.

Isothermal and non-isothermal treatments were performed on amorphous fluorides vapor-deposited FeF//2 and FeF//3, xHF (0. 4 less than x less than 1. 0) obtained by a soft chemistry reaction. They crystallize in rhombohedral and/or hexagonal tungsten bronze type phases, evidenced by Mossbauer spectroscopy and X-ray diffraction. The influence of the experimental parameters is discussed: heating modes and pressure. It is concluded that the 'ideal' amorphous FeF//3 crystallizes in the rhombohedral form.

Synthesis and thermal decomposition of (NH4)2[MIIIF5(H2O)] (M = Al, Fe and Cr)

Ammonium pentafluorometallate monohydrates were prepared by different methods and characterized by chemical analysis, IR spectrometry and X-ray diffraction. Unit cell parameters were determined for the Fe and Cr compounds, which were found to be isostruct

mer-Triammine trifluorido iron(III), mer-[FeF3(NH 3)3]

Metal fluorides are scarcely soluble in liquid ammonia, and their ammine complexes are rare. The synthesis and crystal structure of the first ammine complex of an iron fluoride, the mer-triammine trifluorido iron(III), mer-[FeF3(NH3)3], is presented. The compound crystallizes in the form of colorless, needle-shaped single crystals in the monoclinic space group P21/n with Z = 4. The molecules are interconnected by strong N-H?F hydrogen bonds.

Characterization of an Amorphous Change of FeF3: Thermal, Magnetic and Mossbauer Study.

Amorphous FeF//3 has been prepared by fast vaporization of the bulk material and condensation. It has been characterized by X-ray diffraction and differential thermal analysis. Strong antiferromagnetic interactions, but low spin-freezing temperature, are

An electron diffraction and crystal chemical investigation of oxygen/flourine ordering in rutile-type iron oxyflouride, FeOF

Rutile-type iron oxyfluoride, FeOF, has been synthesized by the reaction of FeF3 with Fe2O3 in a sealed platinum tube at 950°C. The compound was previously believed to have a random distribution of oxygen and fluorine anions surrounding each of the Fe3+ cations. In this work, electron diffraction experiments have revealed the presence of a characteristic diffuse intensity distribution in the form of continuous rods of diffuse intensity running along both the [110]* and [110]* directions of reciprocal space through the (h+k+l) = odd parent rutile reflections. Fe3+ shifts induced by local O/F ordering are shown to be responsible for the characteristic reciprocal space intensity distribution of this observed diffuse scattering. The continuous 〈110〉* rods of diffuse intensity require the existence of orthogonal {110} planes within the parent rutile structure which exhibit long-range, two-dimensional, oxygen/fluorine ordering, but with no correlation from one {110} plane to the next. A crystal chemical explanation is proposed to support this argument.