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Titanium(III) bromide

From Wikipedia, the free encyclopedia
Titanium(III) bromide
Names
IUPAC name
Titanium(III) bromide
Other names
Titanium tribromide
Tribromotitanium
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/3BrH.Ti/h3*1H;/q;;;+3/p-3
    Key: MTAYDNKNMILFOK-UHFFFAOYSA-K
  • [Ti](Br)(Br)Br
Properties
TiBr3
Molar mass287.579 g/mol
Appearanceblue-black solid
Hazards
NFPA 704 (fire diamond)
Related compounds
Otheranions
Titanium(III) chloride
Titanium(III) fluoride
Related compounds
Titanium(IV) bromide
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Titanium(III) bromide is theinorganic 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 thepolymerization of alkenes.

Production and structure

[edit]

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

2 TiBr4 + H2 → 2 TiBr3 + 2 HBr

It can also be produced bycomproportionation of titanium metal andtitanium tetrabromide.[4][5]

Ti + 3 TiBr4 → 4 TiBr3

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

Reactions

[edit]

Heating the tribromide givestitanium(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 → TiBr3L3

References

[edit]
  1. ^"Titanium(III) bromide".
  2. ^"WebElements Periodic Table » Titanium » titanium tribromide".
  3. ^abSherfey, J. M. (1960). "Titanium(III) Chloride and Titanium(III) Bromide".Inorganic Syntheses. Vol. 6. pp. 57–61.doi:10.1002/9780470132371.ch17.ISBN 978-0-470-13237-1.{{cite book}}:ISBN / Date incompatibility (help)
  4. ^abTroyanov, 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; Güdel, Hans U. (1989). "Synthesis and Crystal Growth of A3 M2 X9 (A = Cs, Rb; M = Ti, V, Cr; X = Cl, Br)".Inorganic Syntheses. Vol. 26. pp. 377–385.doi:10.1002/9780470132579.ch69.ISBN 978-0-470-13257-9.
Titanium(II)
Organotitanium(II) compounds
Titanium(III)
Organotitanium(III) compounds
Titanium(IV)
(Oxo)Titanates
Fluorotitanates
Alkoxides, carboxylates,amides
Organotitanium(IV) compounds
Salts and covalent derivatives of thebromide ion
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