Vanadium oxytrichloride

  • Vanadinoxyoxychlorid
  • Vanadyl

Yellow hygroscopic liquid

Liquid

-77 ° C

126.7 ° C

8.1 hPa (20 ° C)

  • Violent decomposition in water
  • Insoluble in ethanol, ether, and glacial acetic acid

Risk

Repealed as carcinogenic

140 mg · kg -1 ( LD50, rat, oral)

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Vanadium (V) oxidtrichlorid is a chemical compound which is present in the form of a yellow hygroscopic liquid which rapidly hydrolyzed.

Production and representation

Vanadium ( V) is synthesized by the oxidtrichlorid chlorination of vanadium ( V) oxide or vanadium (III ) oxide.

Also possible is the preparation by heating by vanadium ( III) chloride in an oxygen stream.

Properties

Physical Properties

Vanadium ( V) is diamagnetic oxidtrichlorid as vanadium compound, and has a tetragonal structure with an O- V -Cl bond angles of 111 ° and a Cl - Cl bond V- angle of 108 °. The V -O and V - Cl bond lengths are 1.57 Å and 2.14 Å.

Chemical Properties

Vanadium (V) oxychloride POCl3 oxidtrichlorid chemically similar, but on the contrary, a strong oxidant. It is a Lewis acid and vanadium pentoxide is hydrolyzed quickly and hydrochloric acid.

Vanadium (V) oxidtrichlorid is also used for the synthesis of Vanadiumoxiddichlorid and Vanadiumoxidmonochlorid.

Use

Vanadium ( V) is used as oxidtrichlorid catalyst for olefin polymerization (for example, EPDM) and as an oxidizing agent for synthesis of Organovanadiumverbindungen and coupling reactions of phenols.

Safety

Vanadium ( V) - oxidtrichlorid is classified as carcinogenic ( category 2).

CAS registry number Vapor pressure Dangerous Substances Directive (67/548/EEC) Hydrolysis Tetragonal crystal system
798714
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