Titanium(III) bromide

Titanium(III) bromide is the inorganic compound with the formula TiBr3. It is a blue black paramagnetic solid with a reddish reflection. It has few applications, although it is a catalyst for the polymerization of alkenes.

Titanium(III) bromide
Names
IUPAC name
Titanium(III) bromide
Other names
Titanium tribromide
Tribromotitanium
Identifiers
3D model (JSmol)
ChemSpider
Properties
TiBr3
Molar mass 287.579 g/mol
Appearance blue-black solid
Hazards
not listed
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
0
0
Related compounds
Other anions
 Titanium(III) chloride
Titanium(III) fluoride
Related compounds
 Titanium(IV) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Production and structure

TiBr3 can be produced by heating the tetrabromide in an atmosphere of hydrogen:[3]

2 TiBr4 + H2 → 2 TiBr3 + 2 HBr

It can also be produced by comproportionation of titanium metal and titanium tetrabromide.[4][5]

Ti + 3 TiBr4 → 4 TiBr3

Two polymorphs of TiBr3 are known, each exhibiting octahedral Ti centers.[4]

Reactions

Heating the tribromide gives titanium(II) bromide together with the volatile tetrabromide:[3]

2 TiBr3 → TiBr4 + TiBr2

The solid dissolves in donor solvents (L) such as pyridine and nitriles to produce 3:1 adducts:

TiBr3 + 3 L → 2 TiBr3L3

References
  1. https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=136975
  2. http://www.webelements.com/compounds/titanium/titanium_tribromide.html
  3. Sherfey, J. M. (2007). "Titanium(III) Chloride and Titanium(III) Bromide". Inorganic Syntheses. Inorganic Syntheses. 6. pp. 57–61. doi:10.1002/9780470132371.ch17. ISBN 9780470132371.
  4. Troyanov, S. I.; Rybakov, V. B.; Ionov, V. M. "Preparation and crystal structure of titanium tetrabromide, titanium tribromide and titanium(2+) tetrabromoaluminate(1-)" Zhurnal Neorganicheskoi Khimii 1990, vol. 35, 882-7.
  5. Stebler, Anton; Leuenberger, Bruno; Gödel, Hans U. (1989). Synthesis and Crystal Growth of A3 M2 X9 (A = Cs, Rb; M = Ti, V, Cr; X = Cl, Br). Inorganic Syntheses. 26. pp. 377–385. doi:10.1002/9780470132579.ch69. ISBN 9780470132579.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.