Sodium tetrachloroaluminate

Structural formula
General
Surname	Sodium tetrachloroaluminate
other names	Sodium chloroaluminate Sodium aluminum chloride
Molecular formula	NaAlCl 4
Brief description	colorless solid
External identifiers / databases
CAS number 7784-16-9 EC number 232-050-6 ECHA InfoCard 100.029.136 PubChem 16699350 Wikidata Q8010655
properties
Molar mass	191.78 g mol −1
Physical state	firmly
density	2.01 g cm −3 (25 ° C)
Melting point	185 ° C
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 314 EUH: 014 P: 280-305 + 351 + 338-310
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Sodium tetrachloroaluminate is a chemical compound from the group of aluminates .

Extraction and presentation

Sodium tetrachloroaluminate can be obtained by reacting sodium chloride with aluminum chloride.

${\displaystyle \mathrm {NaCl+AlCl_{3}\longrightarrow NaAlCl_{4}} }$

properties

Sodium tetrachloroaluminate is a colorless solid with an orthorhombic crystal structure (a = 1036 pm, b = 992 pm, c = 621 pm) with the space group P 2 ₁ 2 ₁ 2 ₁ (space group no. 19) .

use

Sodium tetrachloroaluminate is used as an electrolyte in high temperature batteries such as the sodium nickel chloride battery . It is also used as a catalyst for cracking hydrocarbons or in molten salts as a reaction medium in the production of organometallic compounds such as dimethyltin dichloride .

${\displaystyle \mathrm {Sn+\ 2\ H_{3}CCl\ {\xrightarrow[{NaAlCl_{4}}]{SnCl_{2}}}\ \ Cl_{2}Sn(CH_{3})_{2}\ } }$

Individual evidence

1. ↑ ^{a b c} Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 828.
2. ↑ ^{a b c d e} data sheet Sodium tetrachloroaluminate, anhydrous, powder, 99.99% trace metals basis from Sigma-Aldrich , accessed on February 20, 2014 ( PDF ).
3. ^ Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2011, ISBN 1-4398-1462-7 , pp. 483 ( limited preview in Google Book search).
4. ↑ E. Perenthaler, Heinz Schulz, A. Rabenau: The structures of LiAlCl ₄ and NaAlCl ₄ as a function of temperature. In: Journal of Inorganic and General Chemistry. 491, 1982, pp. 259-265, doi: 10.1002 / zaac.19824910133 .
5. ↑ Erich Rummich: Energy storage: Basics, components, systems and applications . expert verlag, 2009, ISBN 978-3-8169-2736-5 , p. 165 ( limited preview in Google Book search).
6. ↑ Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 3-11-022567-0 , p. 373 ( limited preview in Google Book search).
7. ↑ Volkmar M. Schmidt: Electrochemical process engineering: Fundamentals, reaction engineering ... John Wiley & Sons, 2012, ISBN 3-527-66064-X , p. 7–12 ( limited preview in Google Book search).
8. ↑ Jane E. Macintyre: Dictionary of Inorganic Compounds, Supplement 1 . CRC Press, 1993, ISBN 978-0-412-49090-3 , pp. 4 ( limited preview in Google Book search).
9. ↑ A. v. Rumohr, W. Sundermeyer, W. Towae: Chemical reactions in molten salts. XIX. For the direct synthesis of dimethyltin dichloride, (CH ₃ ) ₂ SnCl ₂ . In: Journal of Inorganic and General Chemistry . tape 499 , no. 4 , April 1983, ISSN  0044-2313 , pp. 75-80 , doi : 10.1002 / zaac.19834990409 .