Niobium oxychloride

• Niobium (V) oxychloride
• Nioboxychlorid ( ambiguous )

Colorless solid

Fixed

3.05 g · cm -3

• Decomposition in water
• Soluble in sulfuric acid
• Insoluble in hydrochloric acid

Template: Infobox chemical / molecular formula search available

Nioboxidtrichlorid is an inorganic chemical compound of niobium from the group of Oxychloride.

Production and representation

Nioboxidtrichlorid can be obtained by reaction of niobium ( V) chloride with oxygen at 150 ° C.

Be won or by hydrolysis.

Also possible to display by reaction of niobium ( V) oxide with thionyl chloride at 200 ° C.

Or by reaction of niobium (V ) oxide and niobium ( V) chloride:

Heated niobium ( V) oxide also results in a stream of chlorine at 800-850 ° C Nioboxidtrichlorid:

Properties

Nioboxidtrichlorid is in the form of colorless needles. Above 350 ° C, the disproportionation begins niobium ( V) chloride, and niobium ( V) oxide. It is, as well as the corresponding yellow and black Nioboxidtribromid Nioboxidtriiodid, very sensitive to moisture. In older literature, for the compound has a tetragonal crystal structure with space group P42/mnm (a = 1087 pm, c = 396 pm ) was adopted with a non-centrosymmetric space group, recent studies showed P421m ( elimination of the mirror planes perpendicular to the double strands ). In addition to this the niobium oxychloride also Nioboxiddichlorid is known.