Old Materials for New Functions: Recent Progress on Metal Cyanide Based Porous Materials

Area of Science:

• Coordination Chemistry
• Materials Science
• Supramolecular Chemistry

Background:

• Cyanide (CN-) is a simple yet fundamental ligand in coordination chemistry, forming diverse cyanometallate structures with transition metals.
• The strong bonding and directional nature of cyanide facilitate the rational design of robust extended frameworks.
• Cyanide-based materials have a long history, dating back to early coordination compounds.

Purpose of the Study:

• To provide an overview of recent advancements in cyanide-based multifunctional framework materials.
• To highlight the potential of cyanide ligands in modern coordination chemistry and materials science.
• To showcase applications ranging from molecular adsorption and energy storage to spin-crossover and smart materials.

Main Methods:

• Review of recent literature on cyanide-based coordination compounds and framework materials.
• Analysis of structural diversity and properties arising from cyanide coordination.
• Discussion of synthetic strategies combining cyanometallates and organic linkers.

Main Results:

• Cyanide ligands enable the construction of robust, multifunctional framework materials with diverse geometries.
• These materials exhibit promising applications in molecular adsorption/separation, energy conversion/storage, and spin-crossover phenomena.
• Incorporation of cyanide facilitates the development of guest- and stimuli-responsive smart materials.

Conclusions:

• Cyanide ligands are crucial for developing advanced multifunctional materials.
• The versatility of cyanide chemistry continues to drive innovation in coordination chemistry and materials science.
• Future research directions include exploring novel cyanide-based materials for next-generation smart technologies.