Tantalum (IV) chloride

Crystal structure
__ Ta 4+      __ Cl -
General
Surname	Tantalum (IV) chloride
other names	Tantalum tetrachloride
Ratio formula	TaCl 4
Brief description	brown-black solid
External identifiers / databases
CAS number 13569-72-7 EC number 236-990-8 ECHA InfoCard 100.033.613 Wikidata Q4498242
properties
Molar mass	322.76 g mol −1
Physical state	firmly
density	4.35 g cm −3
Melting point	300 ° C (decomposition)
solubility	reacts with water
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Tantalum (IV) chloride is an inorganic chemical compound of tantalum from the group of chlorides .

Extraction and presentation

Tantalum (IV) chloride can be obtained by reacting tantalum (V) chloride with aluminum or tantalum.

${\displaystyle \mathrm {3\ TaCl_{5}+Al\longrightarrow AlCl_{3}+3\ TaCl_{4}} }$

${\displaystyle \mathrm {4\ TaCl_{5}+Ta\longrightarrow 5\ TaCl_{4}} }$

properties

Tantalum (IV) chloride is a diamagnetic solid in the form of shiny, brown-black crystal needles. Like the very similar niobium (IV) chloride , it is extremely sensitive to moisture. It has a monoclinic crystal structure with the space group P 2 ₁ / m (space group no. 11) , a = 679  pm , b = 1171 pm, c = 1229 pm, β = 94 ° 33 '.

Individual evidence

1. ↑ ^{a b c d e} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1453.
2. ↑ ^{a b} W. M. Haynes (Ed.): CRC handbook of chemistry and physics. A ready-reference book of chemical and physical data . founded by David R. Lide. 93rd edition. CRC Press, Boca Raton 2012, ISBN 978-1-4398-8049-4 , pp. 4–93 (English, limited preview in Google Book Search).
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
4. ^ Viktor Gutmann: Halogen Chemistry . Elsevier, 1967, ISBN 0-323-14847-6 , pp. 153 ( limited preview in Google Book search).