Niobium pentaiodide

Niobium pentaiodide
Names
Other names
Niobium(V) iodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.006 Edit this at Wikidata
EC Number
  • 237-422-1
UNII
  • InChI=1S/5HI.Nb/h5*1H;/q;;;;;+5/p-5
    Key: FWIYBTVHGYLSAZ-UHFFFAOYSA-I
  • [Nb](I)(I)(I)(I)I
Properties
Nb2I10
Molar mass 1475
Appearance yellow solid
Density 5.30 g/cm3
Melting point 543 °C (1,009 °F; 816 K) sublimes
Hazards
GHS labelling:
GHS05: Corrosive
Danger
H314
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Niobium pentaiodide is the inorganic compound with the formula Nb2I10. Its name comes from the compound's empirical formula, NbI5.[1] It is a diamagnetic, yellow solid that hydrolyses readily. The compound adopts an edge-shared bioctahedral structure, which means that two NbI5 units are joined by a pair of iodide bridges. There is no bond between the Nb centres.[2] Niobium(V) chloride, niobium(V) bromide, tantalum(V) chloride, tantalum(V) bromide, and tantalum(V) iodide, all share this structural motif.

  1. ^ Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford: Butterworth-Heinemann. ISBN 0-7506-3365-4.
  2. ^ Krebs, Bernt; Sinram, Diethard "Darstellung, Struktur und Eigenschaften einer neuen Modifikation von NbI5 (Preparation, structure and properties of a new modification of NbI5" Zeitschrift fǔr Naturforschung, Teil B: Anorganische Chemie, Organische Chemie 1980, volume 35b, pp. 12-16.