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.