33380-11-9

Basic information

• Product Name: ammonium hexafluorotantalate(5)
• Synonyms: ammonium hexafluorotantalate(5);Ammonium hexafluorotantalate
• CAS NO: 33380-11-9
• Molecular Formula: F₆Ta*H₄N
• Molecular Weight: 385.1306192
• EINECS: 251-488-9
• Mol File: 33380-11-9.mol
• Article Data: 2

Chemical Properties

• Appearance: /
• CAS DataBase Reference: ammonium hexafluorotantalate(5)(CAS DataBase Reference)
• NIST Chemistry Reference: ammonium hexafluorotantalate(5)(33380-11-9)
• EPA Substance Registry System: ammonium hexafluorotantalate(5)(33380-11-9)

Safety Data

• Hazardous Substances Data: 33380-11-9(Hazardous Substances Data)

Upstream product

• 7664-39-3 hydrogen fluoride 
• 111490-00-7 N₂H₅⁽¹⁺⁾*TaF₆^(1-)=N₂H₅TaF₆ 
• 7783-71-3 tantalum pentafluoride 

Downstream Products

• 13400-13-0 cesium fluoride 

Relevant articles and documents

Formation of the superoctahedral heteropolyanion [Ni(TaF6)6]4- through oxidation of tantalum with ammonium fluoride at the Monel-container wall

A few single crystals of (NH4)4[Ni(TaF6)6] are obtained besides (NH4)[TaF6] as the main product of the reaction of (NH4)F with tantalum powder in an He-arc-welded Monel metal container at 400°C. The crystal structure (trigonal, R-3c (Nr. 167), Z = 6, a = 1723,0(2); c = 2166,6(2) pm; R1 = 0,0303, wR2 = 0,0609) contains the superoctahedral heteropolyanion [Ni(TaF6)6]4- and (NH4)+ ions; it may be recognized as a derivative structure of the K4CdCl6 type according to (NH4)4[Ni(TaF6)6]≡K 4[Cd(Cl)6].