Potassium tetracyanocuprate (I) is an anionic complex with a monodentate ligand (CN) - .
| Potassium tetracyanocuprate (I) | |
|---|---|
| General | |
| Systematic name | Potassium tetracyanocuprate (I) |
| Chem. formula | K 3 [Cu (CN) 4 ] |
| Physical properties | |
| condition | solid white matter |
| Classification | |
| Reg. CAS number | |
| Reg. EINECS number | |
| Security | |
| Toxicity | Cyanide group |
Description
(CN) - - ligand of a strong field. It is associated with a complexing agent by a donor-accentor mechanism . The compound has an average spin, copper is in sp 3 hybridization. The complex is a paramagnet .
Under standard conditions, it is a white solid, has an ionic crystal lattice, and as a result is not volatile, has a high hardness , must have a high melting point, but decomposes at lower temperatures. Has a tetrahedral ligand field.
Like many cyanide complexes, due to the strong field ligand, the complex is very stable (K y = 10 30 ), like all complexes it is very soluble in water, dissolves, almost completely, on the inner and outer spheres when dissolved:
To a small extent, the complex ion itself also dissociates:
In a solution, it can exhibit both oxidizing and reducing properties, mainly due to Cu + , +1 - an intermediate, unstable oxidation state.
You can get the complex as follows:
The complex is not destroyed by interacting with alkali, since according to the reaction equation
- , K p = 10 −16 <1
Similarly interacts with acids:
- , K p = 10 −24 <1
Toxicity
Due to the presence of the cyanide group is toxic. Toxic properties are manifested by ingestion, skin contact, inhalation of dust.
Literature
- Chugaev L. A. "Chemistry of complex compounds"
- Umland F. Jansen A. Tirig D. “Complex compounds in analytical chemistry”
- Kharitonov Yu. A. "Complex compounds"
- Ugai Ya. A. "General and inorganic chemistry"