Exact formula of tetra-amine-zinc complex

In summary, when ammonia is added to hexaaquazinc ions, it forms Zinc hydroxide as a result of the NH3 acting as a base. In excess NH3, the precipitate will redissolve as a tetraaminezinc complex. The precise formula for this complex is [Zn(NH3)4]2+, which is tetrahedral in shape. Despite logic suggesting otherwise, many sources quote the formula as [Zn(NH3)4(H2O)2]2+. The reason for this could be due to the absence of stray water ligands.
  • #1
hyurnat4
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Sorry this post doesn't look beautifulized and pretty; its 23.00 here.

When ammonia is added to hexaaquazinc ions, the NH3 acts as a base and forms [Zn(H2O)4(OH)2], better known as Zinc hydroxide. However, in excess NH3, the ppt will redissolve as a tetraaminezinc complex. My question is: is the precise formula [Zn(NH3)4]2+ or [Zn(NH3)4(H2O)2]2+?
Trivial, I know, but I cannot rest until this itch is scratched. Logic would suggest the latter, but a lot of sites seem to quote the former. If there are no stray water ligands, what is the reason for this?

Thanks in advance.:bugeye:

Edit: Grr... Hate these constantly reappearing templates.
 
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  • #2
It’s [Zn(NH3)4]2+. The complex is tetrahedral.
 

1. What is a tetra-amine-zinc complex?

A tetra-amine-zinc complex is a chemical compound formed when four molecules of ammonia (NH3) bond with one molecule of zinc (Zn). This results in a complex with the chemical formula Zn(NH3)4.

2. What is the exact formula of tetra-amine-zinc complex?

The exact formula of tetra-amine-zinc complex is Zn(NH3)4, which represents the combination of one molecule of zinc with four molecules of ammonia.

3. How is tetra-amine-zinc complex formed?

Tetra-amine-zinc complex is formed through a process called coordination or complexation. This occurs when the ammonia molecules bond with the zinc ion, forming a stable coordination compound.

4. What are the properties of tetra-amine-zinc complex?

Tetra-amine-zinc complex is a stable and soluble compound with a white or slightly yellow color. It has a tetrahedral molecular geometry and is commonly used as a catalyst in various chemical reactions.

5. What are the applications of tetra-amine-zinc complex?

Tetra-amine-zinc complex has various applications in industries such as pharmaceuticals, agriculture, and cosmetics. It is also used as a catalyst in organic reactions and as a stabilizer in polymers. Additionally, it is used in the production of zinc oxide, a common ingredient in sunscreen and cosmetics.

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