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Potassium heptafluorotantalate is an intermediate in the industrial production of metallic tantalum. Its production involves leaching tantalum ores, such as columbite and tantalite, with hydrofluoric acid and sulfuric acid to produce the water-soluble hydrogen heptafluorotantalate. [2] Ta 2 O 5 + 14 HF → 2 H 2 [TaF 7] + 5 H 2 O
When tantalum enrichment is observed, it is probably due to loss of more water-soluble elements in aerosols in the clouds. [87] Pollution linked to human use of the element has not been detected. [88] Tantalum appears to be a very conservative element in biogeochemical terms, but its cycling and reactivity are still not fully understood.
Template:Tantalum compounds This page was last edited on 3 January 2024, at 12:57 (UTC). Text is available under the Creative Commons Attribution ...
Many oxides of tantalum are called tantalates. They are viewed as derivatives of "tantalic acid", hypothetic compounds with the formulas Ta 2 O 5 ·nH 2 O [1] or HTaO 3 [2]). Examples of such tantalates are lithium tantalate (LiTaO 3), lutetium tantalate (LuTaO 4), neodymium tantalate (NdTaO 4) and lead scandium tantalate (PST or Pb(Sc x Ta 1-x ...
These arise from the salt metathesis reactions of sodium cyclopentadienide and tantalum pentachloride. An example of this is the first transition metal trihydride, Cp 2 TaH 3. More soluble and better developed are derivatives of pentamethylcyclopentadiene such as Cp*TaCl 4, Cp* 2 TaCl 2, and Cp* 2 TaH 3. [4] Tantalum Alkylidene Olefin Metathesis
Tantalocene trihydride, or bis(η 5-cyclopentadienyl)trihydridotantalum, is an organotanalum compound in the family of bent metallocenes consisting of two cyclopentadienyl rings and three hydrides coordinated to a tantalum center. Its formula is TaCp 2 H 3, and it is a white crystalline compound that is sensitive to air. [1]
Anionic halide compounds of niobium are well known, owing in part to the Lewis acidity of the pentahalides. The most important is [NbF 7] 2−, an intermediate in the separation of Nb and Ta from the ores. [55] This heptafluoride tends to form the oxopentafluoride more readily than does the tantalum compound.
Tantalum pentoxide, also known as tantalum(V) oxide, is the inorganic compound with the formula Ta 2 O 5. It is a white solid that is insoluble in all solvents but is attacked by strong bases and hydrofluoric acid. Ta 2 O 5 is an inert material with a high refractive index and low absorption (i.e. colourless), which makes it useful for coatings ...