New coordination networks containing trinuclear lanthanide complexes and hexacyanometallates

Area of Science:

• Coordination Chemistry
• Materials Science
• Inorganic Chemistry

Background:

• Lanthanide complexes are crucial in developing advanced materials.
• TDCI (1,3,5-tris(dimethylamino)-1,3,5-trideoxy-cis-inositol) is a versatile ligand for complex synthesis.
• Hexacyanometallates serve as effective linkers in constructing extended structures.

Purpose of the Study:

• To synthesize and structurally characterize novel trinuclear lanthanide complexes.
• To explore the formation of 1D-chains and 2D-networks using TDCI and hexacyanometallates.
• To investigate the magnetic properties of the resulting lanthanide coordination compounds.

Main Methods:

• Synthesis of trinuclear lanthanide complexes with TDCI ligands.
• Crystallization and structural characterization using X-ray diffraction.
• Magnetic susceptibility and magnetization measurements.

Main Results:

• Three families of trinuclear lanthanide complexes were synthesized and characterized.
• 1D-chains were formed using [Cr(CN)6]3- and [Co(CN)6]3- linkers with specific lanthanide ions.
• 2D-networks were obtained using [Fe(CN)6]3- and Gd3+-Er3+ trinuclear complexes.
• Most compounds exhibited magnetically independent ion behavior, with one exception.

Conclusions:

• The study successfully demonstrated the controlled synthesis of diverse lanthanide-based coordination architectures.
• The choice of hexacyanometallate linker and lanthanide ions dictates the dimensionality of the resulting structures.
• The magnetic properties are largely governed by individual ions, highlighting potential for tunable magnetic materials.