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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
Published on: October 6, 2023
Structural variety within gallium diphosphonates affected by the organic linker length
Martin P Attfield1, Zhanhui Yuan, Howard G Harvey
1Centre for Nanoporous Materials, School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK. m.attfield@manchester.ac.uk
Inorganic Chemistry
|February 20, 2010
Summary
Three new gallium diphosphonate materials were synthesized and structurally characterized. Varying methylene units in diphosphonate ligands influences dimensionality, creating 2D and 3D frameworks with potential applications in materials science.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Crystallography
Background:
- Gallium diphosphonates are a class of metal-organic materials with diverse structural possibilities.
- Understanding structure-property relationships in metal diphosphonates requires systematic variation of ligand components.
Purpose of the Study:
- To synthesize and characterize novel gallium diphosphonates with varying diphosphonate ligand chain lengths.
- To investigate the impact of methylene unit variation on the dimensionality and structural features of gallium diphosphonate frameworks.
Main Methods:
- Solvothermal synthesis of three new gallium diphosphonates.
- Single-crystal laboratory and synchrotron X-ray diffraction for structural determination.
- Comparative analysis of structural trends across metal diphosphonate series with varied alkylene chain lengths.
Main Results:
- Successful synthesis of Ga(3)(OH)(O(3)PC(3)H(6)PO(3))(2) (1), Ga(4)(O(3)PC(5)H(10)PO(3))(3)(C(5)H(5)N)(2) (2), and Ga(HO(3)PC(10)H(20)PO(3)) (3).
- Structures range from 2D pillared slabs (1) to 3D pillared frameworks (2, 3), dictated by diphosphonate ligand length.
- Compound 2 exhibits structural stability upon pyridine loss, while compound 3 shows partial condensation.
Conclusions:
- Systematic variation of alkylene chain length in diphosphonate ligands offers control over the dimensionality of gallium diphosphonate frameworks.
- The observed structural trends provide insights into the general behavior of metal diphosphonate materials with systematically varied ligand lengths.
- These findings contribute to the rational design of novel metal-organic materials with tailored structures.
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