7784-23-8

Basic information

• Product Name: ALUMINUM IODIDE
• Synonyms: ALUMINIUM IODIDE;ALUMINUM TRIIODIDE;ALUMINUM IODIDE;AlI3;Aluminum iodide (AlI3);aluminumiodide(ali3);ALUMINUM IODIDE, TECH., 95%;ALUMINUM IODIDE, ANHYDROUS, POWDER, 99.9
• CAS NO: 7784-23-8
• Molecular Formula: AlI₃
• Molecular Weight: 407.69
• EINECS: 232-054-8
• Product Categories: Inorganics;AluminumMetal and Ceramic Science;Crystal Grade Inorganics;Aluminum Salts;Metal and Ceramic Science;Salts;metal halide
• Mol File: 7784-23-8.mol
• Article Data: 12

Chemical Properties

• Melting Point: 191 °C(lit.)
• Boiling Point: 360 °C(lit.)
• Flash Point: 360°C
• Appearance: White to brownish-purple lump/powder
• Density: 3.98 g/mL at 25 °C(lit.)
• Vapor Pressure: 1 mm Hg ( 178 °C)
• Solubility: Soluble in alcohol, ether, carbon disulfide
• Water Solubility: Soluble in water, alcohol and ether.
• Sensitive: Moisture Sensitive
• Stability: Stable, but light and air-sensitive. Reacts violently with water. Incompatible with aqueous solutions, moisture, strong oxidizin
• Merck: 14,346
• CAS DataBase Reference: ALUMINUM IODIDE(CAS DataBase Reference)
• NIST Chemistry Reference: ALUMINUM IODIDE(7784-23-8)
• EPA Substance Registry System: ALUMINUM IODIDE(7784-23-8)

Safety Data

• Hazard Codes: C
• Statements: 14-34-40-42/43
• Safety Statements: 22-26-36/37/39-45
• RIDADR: UN 3260 8/PG 2
• WGK Germany: 3
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 7784-23-8(Hazardous Substances Data)

Usage

Chemical Properties

powder

Uses

Different sources of media describe the Uses of 7784-23-8 differently. You can refer to the following data:
1. Catalyst in organic synthesis.
2. Aluminum iodide is employed as a catalyst to break certain kinds of C-O and N-O bonds. It cleaves aryl ethers and deoxygenates epoxides?It can also be used for the manufacture of iodinated organic compounds.
3. The compound may be used as an additive for electrolytes in lithium ion batteries.

Hazard

Reacts violently with water.

InChI:InChI=1/Al.3HI/h;3*1H/q+3;;;/p-3

Synthetic route

iodine (7553-56-2) + aluminium (7429-90-5) → aluminium(III) iodide (7784-23-8)

Conditions	Yield
In hexane thin foil of Al was suspended in degassed n-hexane under argon, 1.5 equiv. I2 was added, mixt. was boiled under reflux for 1-3 h; filtered into a heated receiver; elem. anal.;	96%
In further solvent(s) sheet aluminium in I2/ethyl iodide soln.;; impurities of I2;;
In neat (no solvent) addn. of Al to molten I2, ignition and melting of the metal;;

iodine (7553-56-2) + glycerol (56-81-5) + aluminium (7429-90-5) → hydrogen (1333-74-0) + aluminium(III) iodide (7784-23-8)

Conditions	Yield
In water in glycerine-soln. on heating;;

aluminium (7429-90-5) + ferrous iodide → aluminium(III) iodide (7784-23-8) + iron (7439-89-6)

Conditions	Yield
In water byproducts: H2, Al(OH)3;

hydrogen iodide (10034-85-2) + aluminium (7429-90-5) → aluminium(III) iodide (7784-23-8)

Conditions	Yield
In neat (no solvent) byproducts: H2;
In neat (no solvent) byproducts: H2;

aluminium (7429-90-5) + silver(I) iodide → aluminium(III) iodide (7784-23-8)

Conditions	Yield
heating till AgI softens, part of AlI3 is sublimated;
heating till AgI softens, part of AlI3 is sublimated;

zinc(II) selenide + AlSeI → Zn2AlSe3I + aluminium(III) iodide (7784-23-8)

Conditions	Yield
In neat (no solvent) mixt. of the starting materials heated in evacuated sealed quartz tubes to 500-900°C; decompn. of educts ocurrs, AlI3 sublimates off;	A 0% B n/a

zinc telluride + AlTeI → Zn2AlTe3I + aluminium(III) iodide (7784-23-8)

Conditions	Yield
In neat (no solvent) mixt. of the starting materials heated in evacuated sealed quartz tubes to 500-900°C; decompn. of educts ocurrs, AlI3 sublimates off;	A 0% B n/a

tin(IV) iodide + aluminium (7429-90-5) → aluminium(III) iodide (7784-23-8)

Conditions	Yield
In neat (no solvent) formation at reaction of metallic Al with molten SnI4;;

aluminum triiodide dimer → aluminium(III) iodide (7784-23-8)

Conditions	Yield
In neat (no solvent) at 381°C;;

tantalum pentaiodide (14693-81-3) → tantalum tetraiodide (14693-80-2) + aluminium(III) iodide (7784-23-8)

Conditions	Yield
With aluminium in stoichiometric ratio of educts, 325°C in closed evacuated tube; removal of AlI3 by sublimation at 250 °C;
With Al in stoichiometric ratio of educts, 325°C in closed evacuated tube; removal of AlI3 by sublimation at 250 °C;

AlTeI → Al2Te3, cubic, metastable + aluminium(III) iodide (7784-23-8)

Conditions	Yield
In neat (no solvent, solid phase) thermal decompn. by heating at 385°C for 48 h in an evacuated sealed glass ampoule; AlI3 sublimates to the cold end of the ampoule;

[Mg7(μ3-OCH2CH2OMe)6(μ-OCH2CH2OMe)6][tetra(n-butyl)aluminate]2 + iodine (7553-56-2) → aluminium(III) iodide (7784-23-8)

Conditions	Yield
In tetrahydrofuran byproducts: C4H9I; iodide-ion was also formed;

bismuth(III) sulfide + aluminium(III) iodide (7784-23-8) → bismuth(III) iodide (7787-64-6)

Conditions	Yield
In neat (no solvent) byproducts: Al2S3; heating a mixture of molten AlI3 and Bi2S3 in an evacuated tube at 230°C for 48 hours;; sublimation in vacuum at 400°C;;	100%
In neat (no solvent) byproducts: Al2S3; heating a mixture of molten AlI3 and Bi2S3 in an evacuated tube at 230°C for 48 hours;; sublimation in vacuum at 400°C;;	100%

aluminium(III) iodide (7784-23-8) + antimony triiodide (7790-44-5) → Al2Sb2I12

Conditions	Yield
In carbon disulfide exclusion of moisture; SbI3 and AlI3 (equimolar ratio) in CS2 are heated under reflux for 2 h; crystn. at room temp., complete at -20°C within 1 d;	100%

aluminium(III) iodide (7784-23-8) + 2-propanethiol (75-33-2) → aluminium triodide*2-propanethiol (98773-03-6)

Conditions	Yield
In benzene under N2, dropwise addn. of thiol soln. to a suspension of AlI3 in benzene, dissoln. of AlI3, stirred for 15 min at room temp.; evapn. of solvent, dried in vac. at room temp. for 3h, elem. anal.;	100%

1-thiopropane (107-03-9) + aluminium(III) iodide (7784-23-8) → aluminium triodide*1-propanethiol (98773-02-5)

Conditions	Yield
In benzene under N2, dropwise addn. of thiol soln. to a suspension of AlI3 in benzene, dissoln. of AlI3, stirred for 15 min at room temp.; evapn. of solvent, dried in vac. at room temp. for 3h, elem. anal.;	100%

Trimethyl(methylthio)silane (3908-55-2) + aluminium(III) iodide (7784-23-8) → aluminium triiodide*trimethylsilyl methyl sulphide (112908-17-5)

Conditions	Yield
In benzene a benzene soln. of Me3SiSMe was added dropwise under N2 to a suspn. of AlI3 in benzene, mixt. was stirred for 15 min at room temp.; solvent was evapd.; elem. anal.;	100%

aluminium(III) iodide (7784-23-8) + thiophenol (108-98-5) → aluminium triodide*ethanethiol (98773-01-4)

Conditions	Yield
In benzene under N2, dropwise addn. of thiol soln. to a suspension of AlI3 in benzene, dissoln. of AlI3, stirred for 15 min at room temp.; evapn. of solvent, dried in vac. at room temp. for 3h, elem. anal.;	100%

(ethylthio)trimethylsilane (5573-62-6) + aluminium(III) iodide (7784-23-8) → aluminium triiodide*trimethylsilyl ethyl sulphide (112908-18-6)

Conditions	Yield
In benzene a benzene soln. of Me3SiSEt was added dropwise under N2 to a suspn. of AlI3 in benzene, mixt. was stirred for 15 min at room temp.; solvent was evapd.; elem. anal.;	100%

tellurium + iodine (7553-56-2) + aluminium(III) iodide (7784-23-8) → TeI3(1+)*AlI4(1-)=TeI3[AlI4] (165602-57-3)

Conditions	Yield
In neat (no solvent) Ar atm.; molar ratio Te:I2:AlI3 1:2:1, heating (150-200°C, several hours);	100%

acridine (260-94-6) + bis(2,2,6,6-tetramethylpiperidino)aluminium iodide (194140-74-4) + aluminium(III) iodide (7784-23-8) → (2,2,6,6-tetramethylpiperidino)2Al(acridine) tetraiodoaluminate (211381-97-4)

Conditions	Yield
In dichloromethane inert atmosphere, addn. of soln. of acridine to soln. of piperidino compound at -78°C, -78°C (1 h), addn. of AlI3, slow warming toroom temp.; filtration, removement of volatiles (vacuum); elem. anal.;	99%

(2,2,6,6-tetramethylpiperidino)2AlI(isoquinoline) (211381-78-1) + aluminium(III) iodide (7784-23-8) → (2,2,6,6-tetramethylpiperidino)2Al(isoquinoline) tetraiodoaluminate (211381-95-2)

Conditions	Yield
In toluene inert atmosphere, addn. of soln. of AlI3 to soln. of piperidino compoundat 5-10°C, stirring (1.5 h); filtration, concn. of filtrate to dryness (vacuum); elem. anal.;	99%

bis(tricyclohexylphosphine)platinum(0) (55664-33-0) + aluminium(III) iodide (7784-23-8) → Pt(P(C6H11)3)2AlI3 (960294-96-6)

Conditions	Yield
In benzene AlBr3 was added to a soln. of Pt-complex in benzene, the soln. was kept at room temp. for 24 h;	99%

thallium(I) iodide + aluminium(III) iodide (7784-23-8) → Tl(1+)*AlI4(1-)=TlAlI4 (1208001-83-5)

Conditions	Yield
In neat (no solvent, solid phase) (Ar); solid state reaction; equimolar mixt. of TlI, and AlI3 sealed under vac. in glass ampoules; heated with 10°C/h to 150°C for 48 h; cooled to 25°C with 2.degre.C/h; detn. by XRD;	99%

hydrogen iodide (10034-85-2) + aluminium(III) iodide (7784-23-8) + 1,1,3,3-tetraphenyltrisilan (158875-67-3) → tetraiodotrisilane (192330-84-0)

Conditions	Yield
In benzene byproducts: C6H6; N2-atmosphere; passing hydrogen halide through soln. of silane contg. little Al-halide (gentle heating or cooling when necessary) to end of hydrogen halide consumption; evapn. (vac.), heptane addn., decantation from Al-halide, evapn.; elem. anal.;	98%

(1R,2R)-(-)-N,N'-bis(3,5-di-tert-butylsalicydene)-1,2-cyclohexanediaminocobalt(II) (176763-62-5) + aluminium(III) iodide (7784-23-8) → [AlI3(Co((R,R)-C6H10(NCHC6H2O(tert-butyl)2)2))]

Conditions	Yield
In dichloromethane; water addn. of Co(C6H10(NCHC6H2O(t-Bu)2)2) (1 equiv.) to soln. of AlI3 (1 equiv.) in CH2Cl2 and H2O; stirring at room temp. for 1 h; concn. under reduced pressure, treatment with H2O and CH2Cl2;	98%

1,1,2,2,3,3-hexaphenyltrisilane (18816-18-7) + hydrogen iodide (10034-85-2) + aluminium(III) iodide (7784-23-8) → I2HSiSiI2SiHI2 (192330-89-5)

Conditions	Yield
In benzene byproducts: C6H6; N2-atmosphere; passing hydrogen halide through soln. of silane contg. little Al-halide (gentle heating or cooling when necessary) to end of hydrogen halide consumption; evapn. (vac.), heptane addn., decantation from Al-halide, evapn.; elem. anal.;	97%

4-tert-butylpyridine (3978-81-2) + bis(2,2,6,6-tetramethylpiperidino)aluminium iodide (194140-74-4) + aluminium(III) iodide (7784-23-8) → AlI3(4-tert-butylpyridine) (211381-99-6)

Conditions	Yield
In hexane inert atmosphere, addn. of tert-butylpyridine to soln. of piperidino compound, addn. of AlI3 at room temp.; crystn. (overnight), filtration, washing (pentane); elem. anal.;	96%

2,2-dimethylpropylidynephosphine (78129-68-7) + aluminium(III) iodide (7784-23-8) → 2,4,6-tri-tert-butyl-1,5-diphospha-3-phosphoniaspiro[3.4]hexa-1,4-dien-6-yl triiodoaluminate

Conditions	Yield
In dichloromethane (argon); -78°C to room temp., stirring (2 h); removal of solvent (25°C/E-3 mbar);	95%

CH3NC(CH3)CHC(CH3)N(CH3)AlH2 (281654-50-0) + aluminium(III) iodide (7784-23-8) → C6H5NC(CH3)CHC(CH3)NC6H5AlI2 (420087-18-9)

Conditions	Yield
In dichloromethane under inert gas, 2 equiv. of Me3NHI was added to CH2Cl2 soln. of Al-complex at -20 °C., stirring for 3 h, warming up to room temp., stirring at room temp. for 8 h; solvent was removed in vac., residue was three times extd. with toluene,solvent was removed, solid was recrystd. from toluene/pentane at -30 .d egree.C, elem. anal.;	94%

hydrogen iodide (10034-85-2) + aluminium(III) iodide (7784-23-8) + 1,1,2,2-Tetraphenyl-trisilane (185988-25-4) → I2HSiSiI2SiH3 (192330-83-9)

Conditions	Yield
In benzene byproducts: C6H6; N2-atmosphere; passing hydrogen halide through soln. of silane contg. little Al-halide (gentle heating or cooling when necessary) to end of hydrogen halide consumption; evapn. (vac.), heptane addn., decantation from Al-halide, evapn.; elem. anal.;	94%

hydrogen iodide (10034-85-2) + aluminium(III) iodide (7784-23-8) + 1,1,2,2,3-Pentaphenyl-trisilane (192330-96-4) → I2HSiSiI2SiH2I (192330-86-2)

Conditions	Yield
In benzene byproducts: C6H6; N2-atmosphere; passing hydrogen halide through soln. of silane contg. little Al-halide (gentle heating or cooling when necessary) to end of hydrogen halide consumption; evapn. (vac.), heptane addn., decantation from Al-halide, evapn.; elem. anal.;	94%

methylthiol (74-93-1) + aluminium(III) iodide (7784-23-8) → aluminium triodide*methanethiol (98773-00-3)

Conditions	Yield
In benzene under N2, CH3SH introduced in a suspension of AlI3 for 7 min, dissoln. of AlI3, stirred for 15 min at room temp.; evapn., pptn., filtered, washed (hexane), dried in vac., elem. anal.;	93%

aluminium(III) iodide (7784-23-8) + lead bis(methylthiolate) (35029-96-0) → diiodo(methylthio)alane

Conditions	Yield
In benzene lead dithiolate was added to a suspn. of AlI3 in benzene under N2, mixt. was heated under reflux for 2 h; filtered, filtrate was concd., ppt. collected by filtration, washed with pentane, dried under high vac.; elem. anal.;	93%

aluminium(III) iodide (7784-23-8) + phosphorous triiodide (13455-01-1) → P2I5(1+)*AlI4(1-) = [P2I5][AlI4] (85887-16-7)

Conditions	Yield
In carbon disulfide (N2); stirring (room temp., 24 h); solvent removal (dynamic vac.);	92%

aluminium(III) iodide (7784-23-8) + acetone (67-64-1) → AlI3(acetone)2 (141997-44-6)

Conditions	Yield
In diethyl ether conventional Schlenk technique under dried Ar: addn. (dropwise) of 22mmol acetone in 10ml diethylether to a stirred, recently prepared, soln. of 10mmol AlI3 in 100ml diethylether, further stirring of mixture for 5min;; filtration, washing and drying in vacuo; elem. anal.;;	91%
In carbon disulfide conventional Schlenk technique under dried Ar: addn. of acetone to soln. of aluminium (III) iodide in carbondisulfide;; elem. anal.; 1H-NMR;;	>90

lead(II) ethyl sulfide (28420-40-8, 32812-83-2, 40597-30-6) + aluminium(III) iodide (7784-23-8) → diiodo(ethylthio)alane

Conditions	Yield
In benzene lead dithiolate was added to a suspn. of AlI3 in benzene under N2, mixt. was heated under reflux for 2 h; filtered, filtrate was concd., ppt. collected by filtration, washed with pentane, dried under high vac.; elem. anal.;	89%

tris(2,4,6-trimethylphenyl)phosphine (23897-15-6) + iodine (7553-56-2) + aluminium(III) iodide (7784-23-8) → [Mes3PI][AlI4] (1334609-05-0)

Conditions	Yield
In toluene under N2; stirred for 30 min; solvent removed (vac.), solid stirred in hexanes for 10 min, filtered onglass frit, washed with hexanes, dried;	89%

diphosphorus tetraiodide (13455-00-0) + iodine (7553-56-2) + aluminium(III) iodide (7784-23-8) → P2I5(1+)*AlI4(1-) = [P2I5][AlI4] (85887-16-7)

Conditions	Yield
In carbon disulfide (N2); stirring (room temp., 24 h); solvent removal (dynamic vac.);	88%

(2,2,6,6-tetramethylpiperidino)2AlI(pyridine) (211381-81-6) + aluminium(III) iodide (7784-23-8) → (2,2,6,6-tetramethylpiperidino)AlI2(pyridine) (211382-02-4)

Conditions	Yield
In toluene inert atmosphere, addn. of AlI3 to soln. of piperidino compound at 0°C, stirring (overnight); filtration, concn. to dryness (vacuum), crystn. (temperatures up to 35°C (several days, storage (1 week)), washing (pentane); elem. anal.;	88%

carbon dioxide (124-38-9) + tris(2,4,6-trimethylphenyl)phosphine (23897-15-6) + aluminium(III) iodide (7784-23-8) → Mes3P(CO2)(AlI3)2

Conditions	Yield
In further solvent(s) in bromobenzene; for 5 min; pptd. using hexanes, filtered, dried on a frit;	87%

Upstream product

• 7429-90-5 aluminium 
• 7783-86-0 ferrous iodide 
• 10034-85-2 hydrogen iodide 
• 14693-81-3 tantalum pentaiodide 
• 7553-56-2 iodine 
• 56-81-5 glycerol 

Downstream Products

• 7787-64-6 bismuth(III) iodide 
• 7790-87-6 cesium triiodide 
• 7790-33-2 manganese(II) iodide 
• 13813-24-6 neodymium(III) iodide 
• 13813-22-4 lanthanum(III) iodide 
• 1333-84-2 aluminum oxide 
• 10101-63-0 lead(II) iodide 
• 7790-48-9 tellurium(IV) iodide 
• 7704-34-9 sulfur 
• 14055-74-4 molybdenum(II) iodide 
• 7429-90-5 aluminium 
• 14693-81-3 tantalum pentaiodide 
• 13465-84-4 silicon tetraiodide 
• 13813-25-7 samarium(III) iodide 

Relevant articles and documents

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