14693-81-3

Basic information

• Product Name: TANTALUM (V) IODIDE
• Synonyms: Tantalumiodide;tantalumiodide(tai5);TANTALUM PENTAIODIDE;TANTALUM (V) IODIDE;Tantalum (V) iodide (99.9%-Ta);TantalumViodideblackpowder;TANTALUM(V) IODIDE 99.9+%;Tantalum(V) iodide, 96+%
• CAS NO: 14693-81-3
• Molecular Formula: I₅Ta
• Molecular Weight: 815.47
• EINECS: 238-742-4
• Mol File: 14693-81-3.mol
• Article Data: 5

Chemical Properties

• Melting Point: 496 °C(lit.)
• Boiling Point: 543 °C(lit.)
• Flash Point: °C
• Appearance: /black hexagonal crystals
• Density: 5.8 g/mL at 25 °C(lit.)
• Sensitive: Moisture Sensitive
• CAS DataBase Reference: TANTALUM (V) IODIDE(CAS DataBase Reference)
• NIST Chemistry Reference: TANTALUM (V) IODIDE(14693-81-3)
• EPA Substance Registry System: TANTALUM (V) IODIDE(14693-81-3)

Safety Data

• Hazard Codes: T
• Statements: 23-34
• Safety Statements: 26-36/37/39-45
• RIDADR: UN 3260 8/PG 2
• WGK Germany: 3
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 14693-81-3(Hazardous Substances Data)

Usage

Chemical Properties

hexagonal black powder(s); sensitive to moisture [LID94] [STR93]

InChI:InChI=1/5HI.Ta/h5*1H;/q;;;;;+2/p-5

Upstream product

• 10034-85-2 hydrogen iodide 
• 7721-01-9 tantalum pentachloride 
• 7783-97-3 silver(I) iodate 
• 13451-11-1 tantalum pentabromide 
• 7784-23-8 aluminium(III) iodide 
• 7553-56-2 iodine 
• 13465-84-4 silicon tetraiodide 

Downstream Products

• 14693-80-2 tantalum tetraiodide 
• 7784-23-8 aluminium(III) iodide 

Relevant articles and documents

Well-ordered crystals of TaI5. The formation of the ternary iodide CsTaI6

Well ordered single crystals of TaI5 (orthorhombic, Pnma (no. 62), a = 1396.2(2), b = 2009.5(4), c = 660.7(1) pm, Z = 8, R1 for 967 reflections with I02σ(I0): 0.0381) were obtained from a reaction of the elements. The structure determination confirms Mueller's prediction of 1978. Single crystals of CsTaI6 (monoclinic, C2/c (no. 15), a = 1362.3(2), b = 709.9(1), c = 1736.2(3) pm, β = 128.77(1)° , Z = 4, R1 for 1140 reflections with I 02σ(I0): 0.0378) were obtained by the oxidation of tantalum with CsI3. Both crystal structures contain [TaI6] octahedra which are edge-connected to Ta2I10 dimers in TaI5 and isolated as [TaI6]- anions in the salt Cs[TaI6] (CsWCl6 type of structure).

Heavier Halides of Early Transition Elements by Halide-exchange Reactions. Crystal and Molecular Structure of2

The decahalogenodimetalates of zirconium(IV) as their triphenylmethyl deivatives have been obtained by the reaction of M(BH4)4 with the appropriate Ph3CX or by addition of Ph3CX to MX4.The crystal and molecular structure of2 h

The preparation of tantalum(IV) bromide, tantalum(IV) iodide, and pyridine adducts of the tantalum(IV) halides

The necessary conditions for preparation of TaBr4 and TaI4 by reduction of the pentahalides with tantalum or aluminum metal in a sealed tube under a controlled temperature gradient have been demonstrated. An unusual, but more fruitful synthesis of TaI4 was devised from the reduction of TaI5 with pyridine. X-Ray powder patterns of diamagnetic, isomorphous TaCl4 and TaBr4 were indexed on an orthorhombic unit cell of dimensions a = 8.10, b = 8.92, c = 6.80 ?. and a = 8.58, b = 9.30, c = 7.21 ?., respectively. The compounds TaCl4(C5H5N)2 and TaBr4(C5H5N)2 were prepared by the reaction of pyridine with the respective tetrahalides at room temperature. Unusually low magnetic moments of 0.69 and 0.43 B.M. were found for the chloride- and bromide-pyridine adducts, respectively.