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06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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A twelve-coordinated iodide in a cuboctahedral silver(I) skeleton
Jian-Hong Liao1, Camille Latouche, Bing Li
1Department of Chemistry, National Dong Hwa University , Hualien, Taiwan 97401, R. O. C .
Inorganic Chemistry
|January 31, 2014
Summary
Researchers synthesized novel silver(I) clusters, including a dodecanuclear complex featuring a unique μ12-iodide ligand, the highest coordination number for iodide reported to date.
Area of Science:
- Coordination Chemistry
- Inorganic Synthesis
- Materials Science
Background:
- Silver(I) complexes are known for diverse structures and properties.
- Halide ligands play a crucial role in stabilizing metal clusters.
- Previous studies have shown limited coordination numbers for halide ions in metal complexes.
Purpose of the Study:
- To synthesize and characterize new octanuclear and dodecanuclear silver(I) halide-centered clusters.
- To investigate the effect of halide size on silver cluster formation.
- To explore the coordination chemistry of halide ions within silver cages.
Main Methods:
- Synthesis of silver(I) complexes using silver(I) salts and dithiophosphinate ligands.
- Structure elucidation via single crystal X-ray diffraction.
- Spectroscopic characterization including multinuclear NMR and ESI-MS.
- Photoluminescence studies.
Main Results:
- Three new halide-centered octanuclear silver(I) complexes ([Ag8(X){S2P(CH2CH2Ph)2}6](PF6), X = F-, Cl-, Br-) were synthesized.
- The size of the central halide modulated the Ag8 cubic core.
- A luminescent dodecanuclear silver(I) cluster ([Ag12(μ12-I)(μ3-I)4{S2P(CH2CH2Ph)2}6](I)) featuring a novel μ12-iodide was synthesized.
- The μ12-iodide in the dodecanuclear cluster represents the highest coordination number for a halide ion reported to date.
Conclusions:
- Novel octanuclear and dodecanuclear silver(I) clusters were successfully synthesized and characterized.
- The study demonstrates the formation of a unique μ12-iodide ligand within a silver cage, expanding the known coordination chemistry of halides.
- The findings highlight the potential for designing complex silver clusters with unusual halide coordination.
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