KTcO4

Potassium tetrachlorocuprate(II) (KTcO4) is an inorganic compound with the chemical formula K₂CuCl₄, commonly referred to as potassium copper(II) chloride. It is a coordination complex where copper(II) ions (Cu²⁺) are coordinated by four chloride ions (Cl⁻), forming a square planar complex anion, [CuCl₄]²⁻, balanced by potassium cations (K⁺). This compound is notable for its role in coordination chemistry and its use as a precursor in various chemical syntheses.

KTcO4 typically appears as a greenish-blue crystalline solid, though its exact color may vary depending on the hydration state and crystal form. It is soluble in water and polar solvents, dissociating into its constituent ions. The compound is often studied for its magnetic properties, as copper(II) ions exhibit paramagnetism due to their unpaired d-electrons, making it useful in materials science research.

In the laboratory, KTcO4 can be synthesized by reacting copper(II) chloride with potassium chloride in a suitable solvent, often under controlled conditions to ensure proper stoichiometry. It is also used in electrochemical studies, particularly in the development of conductive polymers and molecular magnets. However, due to its potential toxicity and corrosive nature, handling KTcO4 requires proper safety precautions, including the use of gloves, goggles, and adequate ventilation.

The compound has limited commercial applications but remains significant in academic research, particularly in fields such as inorganic chemistry, materials science, and electrochemistry. Its stability and reactivity make it a valuable model system for understanding coordination chemistry and transition metal behavior.