21340-02-3

Basic information

• Product Name: tetrafluoroaluminate
• Synonyms: tetrafluoroaluminate;tetrafluoroaluminate(1-)
• CAS NO: 21340-02-3
• Molecular Formula: AlF4
• Molecular Weight: 0
• Mol File: 21340-02-3.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• CAS DataBase Reference: tetrafluoroaluminate(CAS DataBase Reference)
• NIST Chemistry Reference: tetrafluoroaluminate(21340-02-3)
• EPA Substance Registry System: tetrafluoroaluminate(21340-02-3)

Safety Data

• Hazardous Substances Data: 21340-02-3(Hazardous Substances Data)

Usage

InChI:InChI=1/Al.4FH/h;4*1H/q+3;;;;/p-4/rAlF4/c2-1(3,4)5/q-1

Upstream product

• 7446-70-0 aluminium trichloride 
• 22537-23-1 aluminium(III) ion 
• 16984-48-8 fluoride 
• 58-64-0 adenosine 5'-diphosphate 
• 7784-16-9 sodium tetrachloroaluminate 
• 795226-43-6 [Al(C₁₄H₅O₂(SO₃)(OH)(O))2]^(1-) 
• 7681-49-4 sodium fluoride 
• 7782-41-4 fluorine 
• 7429-90-5 aluminium 

Relevant articles and documents

A water-soluble fluorescent fluoride ion probe based on Alizarin Red S-Al(III) complex

A new water-soluble fluorescent fluoride ion signaling system has been developed based on the ligand exchange mechanism in aqueous medium. This procedure is based on the exchange of two Alizarin Red S (ARS) molecules coordinated to Al(III) by fluoride ion without interference from other common anions. The binary complex of ARS with Al(III) provides a sensitive signaling system for fluoride ion in the concentration range from 5 × 10-6 to 3 × 10-4 M. The ligand exchange reaction of ARS-Al(III) complex with fluoride ion has been investigated by UV-vis and fluorescence spectroscopies combined with the AM1 semi-empirical quantum chemical calculations. The pale orange fluorescence (λmax = 575 nm) exhibited by the complex upon excitation at 435 nm decreases in intensity with fluoride addition with a detection limit of 0.1 mg L-1.

Aluminium-27 N.M.R. Studies of Aluminium Fluoro Complexes in Dichloromethane Solution: Evidence for the Tetrafluoroaluminate Anion

Mixed aluminium chloro/fluoro anions are formed in dichloromethane solution by the interaction of AlCl3 and .Aluminium-27 n.m.r. studies are restricted to the stoichiometric ranges F/Al from 1:1 to 3:1 and F/Al>8:1.Between these limits rapid precipitation reactions occur.In the Fluoride-rich stoichiometric range there is rapid exchange on the n.m.r. time scale between the aluminium fluoro anion and free fluoride, so that a direct identification of the species by the multiplicity of the resonance is not possible.Indirect evidence strongly suggests that the aluminium species is -.In the F/Al stoichiometry range from 1:1 to 3:1 aluminium-27 resonances were observed for all the other possible - species.Studies on the aluminium iodo/fluoro system support the identification of -, but the system is labile and the mixed iodo/fluoro species undergo rapid disproportionation.