1-Butyl-3-methylimidazolium thiocyanate, CAS: 344790-87-0

Key Applications:

Catalysis and Synthesis

• Serves as a polar, non‑volatile reaction medium for transition‑metal‑catalyzed transformations, including C–C and C–N bond‑forming reactions.
• Enhances rates and selectivity in nucleophilic substitution and heterocycle‑forming reactions due to the coordinating SCN⁻ anion.
• Supports biphasic and recyclable catalytic systems, reducing solvent waste and improving process efficiency.

Materials Processing and Polymer Science

• Effective solvent or co‑solvent for biopolymers such as cellulose, chitin, and lignin, enabling dissolution, regeneration, and functionalization workflows.
• Facilitates polymer blending, derivatization, and nanoparticle dispersion where strong anion coordination improves solubility and uniformity.
• Useful in ionothermal synthesis of porous materials, including metal–organic frameworks and inorganic nanostructures.

Electrochemistry and Energy Storage

• Functions as an electrolyte component in electrochemical devices, benefiting from the SCN⁻ anion’s conductivity and coordination properties.
• Supports redox‑active species in dye‑sensitized solar cells, electrochemical sensors, and electrodeposition systems.
• Enables stable ionic environments for studying charge‑transfer mechanisms and electrode interfaces.

Extraction, Separation, and Analytical Chemistry

• Applied in liquid–liquid extraction of metal ions, particularly soft or borderline metals that interact strongly with thiocyanate.
• Enhances selectivity in separation processes involving transition metals, rare‑earth elements, and organometallic complexes.
• Used as a medium for spectroscopic and electroanalytical studies where controlled solvation and low volatility are required.

Thermal and Process Engineering

• Suitable as a heat‑transfer or thermal‑stabilizing medium in specialized systems due to its low vapor pressure and thermal robustness.
• Supports high‑temperature reaction environments where conventional solvents degrade or volatilize.

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