Titanium(II) chloride

Titanium dichloride

Black, pyrophoric solids

Fixed

3.13 g · cm -3

1035 ° C

1500 ° C

Decomposition in water

Risk

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Titanium ( II) chloride is a chemical compound of titanium selected from the group of the chlorides.

Production and representation

Usually titanium (II) is obtained chloride by thermal disproportionation of titanium (III ) chloride at 500 ° C, by an onset of decomposition reaction of titanium (II) chloride, titanium (IV ) chloride and titanium with this method no pure product can be obtained, and this must be 2 - containing 3% free titanium.

Titanium ( II) chloride may also be obtained by reacting titanium with a titanium (IV ) chloride.

In a very pure and finely divided form may titanium ( II) chloride are obtained with hydrogen in an electrodeless electrical discharge by the reduction of titanium ( IV) chloride.

Properties

Titanium (II ) chloride is a strong reducing agent ( reacts violently with water and oxygen) and has a layered crystal structure Cadmiumdiiodid, the titanium (II ) is positioned octahedrally to six chloride ligands. It forms the derivatives or complexes of TiCl2 (R) 2 wherein R is a chelate ( for example, DPPE or TMEDA ) or a salt (eg sodium chloride ) can be.

Use

Titanium ( II) chloride can be used for the production of pure titanium and as a mediator in organic syntheses.

Safety

Titanium (II ) chloride is self-igniting ( depends inter alia on the grain size) and forms on contact with water or damp air, evolve highly flammable gases. The reaction with water running violently.