Tantalum(V) chloride

Tantalum pentachloride

Yellowish solid with a pungent odor

Fixed

3.68 g · cm -3

216-217 ° C

232-235 ° C

• Decomposes in water
• Soluble in ethanol

Risk

1900 mg · kg -1 ( LD50, rat, oral)

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Tantalum ( V) chloride is a chemical compound from the group of tantalum compounds and chlorides.

Production and representation

Tantalum ( V) chloride can be recovered directly from the elements.

Alternatively, the representation of tantalum ( V) oxide and thionyl chloride

Or tantalum ( V) oxide and carbon tetrachloride possible.

Properties

Tantalum ( V) chloride is a yellowish solid with pungent odor, which decomposes in water or in acid deposition of tantalum in concentrated hydrochloric acid. It has a monoclinic crystal structure with space group C2 / m (a = 1823 pm, b = 1776 pm, c = 586 pm, β = 90.6 °). The pure compound is colorless, the yellow color is usually stirred by an impurity of niobium ( V) chloride or tungsten chloride forth.

Use

Tantalum ( V) chloride is used as the chlorinating agent in organic synthesis.