Titanium(IV) fluoride

Titanium(IV) fluoride

Names
Other names titanium tetrafluoride
Identifiers
CAS Number	7783-63-3
3D model (JSmol)	Interactive image
ChemSpider	7988529 Y
ECHA InfoCard	100.029.106
EC Number	232-017-6
PubChem CID	121824
InChI InChI=1S/4FH.Ti/h4*1H;/q;;;;+4/p-4 Y Key: XROWMBWRMNHXMF-UHFFFAOYSA-J Y InChI=1/4FH.Ti/h4*1H;/q;;;;+4/p-4 Key: XROWMBWRMNHXMF-XBHQNQODAM
SMILES [Ti+4].[F-].[F-].[F-].[F-]
Properties
Chemical formula	TiF4
Molar mass	123.861 g/mol
Appearance	white powder hygroscopic
Density	2.798 g/cm3
Melting point	377 °C (711 °F; 650 K)
Boiling point	sublimes
Hazards
EU classification (DSD) (outdated)	not listed
NFPA 704	0 3 0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Titanium(IV) fluoride is the inorganic compound with the formula TiF₄. It is a white hygroscopic solid. In contrast to the other tetrahalides of titanium, it adopts a polymeric structure. In common with the other tetrahalides, TiF₄ is a strong Lewis acid.

The traditional method involves treatment of titanium tetrachloride with excess hydrogen fluoride:

Purification is by sublimation, which involves reversible cracking of the polymeric structure. X-ray crystallography reveals that the Ti centres are octahedral, but conjoined in an unusual columnar structure.

TiF₄ forms adducts with many ligands. One example is cis-TiF₄(MeCN)₂, which is formed by treatment with acetonitrile.