Tantalum(V) iodide

Tantalum(V) iodide
Names
	Other names Tantalum pentaiodide
Identifiers
CAS Number	14693-81-3 TaI5 ; 26814-38-0 Ta2I10;
3D model (JSmol)	Interactive image;
ChemSpider	76319;
EC Number	238-742-4;
PubChem CID	84598;
	InChI InChI=1S/5HI.Ta/h5*1H;/q;;;;;+5/p-5 Key: MISXNQITXACHNJ-UHFFFAOYSA-I;
	SMILES [I-].[I-].[I-].[I-].[I-].[Ta+5];
Properties
Chemical formula	Ta2I10
Molar mass	1630.94046 g·mol−1
Appearance	black solid
Density	5.8 g/cm3
Melting point	382 °C (720 °F; 655 K) sublimes
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H331
Precautionary statements	P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P321, P363, P403+P233, P405, P501
Related compounds
Other anions	Tantalum(V) fluoride; Tantalum(V) chloride; Tantalum(V) bromide;
Other cations	Protactinium(V) iodide; Niobium(V) iodide;
Related compounds	Tantalum(IV) iodide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tantalum(V) iodide is the inorganic compound with the formula Ta₂I₁₀. Its name comes from the compound's empirical formula, TaI₅. It is a diamagnetic, black solid that hydrolyses readily. The compound adopts an edge-shared bioctahedral structure, which means that two TaI₅ units are joined by a pair of iodide bridges. There is no bond between the Ta centres. Niobium(V) chloride, niobium(V) bromide, niobium(V) iodide, tantalum(V) chloride, and tantalum(V) bromide all share this structural motif.