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Related Experiment Video

Updated: Jun 22, 2026

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

Homometallic uranium(VI) phosphonoacetates containing interlayer dipyridines.

Karah E Knope¹, Christopher L Cahill

¹Department of Chemistry, The George Washington University, 725 21st Street NW, Washington, DC 20052, USA.

Inorganic Chemistry

|June 24, 2009

Summary

Three new uranium(VI) carboxyphosphonates were synthesized using hydrothermal reactions. These materials exhibit layered structures with significant hydrogen and pi-pi bonding, alongside interesting thermal and fluorescent properties.

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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods

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Published on: October 6, 2023

Area of Science:

Inorganic Chemistry
Materials Science
Crystallography

Background:

Uranium(VI) compounds are of interest for their diverse structural motifs and potential applications.
Organically templated metal-organic frameworks offer tunable properties based on organic linker and metal ion choice.

Purpose of the Study:

To synthesize and characterize novel organically templated uranium(VI) carboxyphosphonates.
To investigate the structural features, including interlayer interactions and bonding.
To explore the thermal and fluorescent properties of the synthesized compounds.

Main Methods:

Hydrothermal synthesis using uranyl nitrate and phosphonoacetic acid with various bipyridyl ligands.
Single-crystal X-ray diffraction for structural determination of compounds 1-3.
Thermogravimetric analysis and fluorescence spectroscopy for property evaluation.

Main Results:

Three novel uranium(VI) carboxyphosphonates (1-3) were successfully synthesized and structurally characterized.
The crystal structures feature 2D networks of UO7 units linked by phosphonoacetate, charge-balanced by protonated bipyridyl molecules.
Interlayer interactions include N-H...O, C-H...O hydrogen bonds, water-carboxylate hydrogen bonds, and pi-pi stacking.

Conclusions:

The study presents new uranium(VI) carboxyphosphonates with layered structures and diverse intermolecular interactions.
The synthesized materials demonstrate potential for further investigation into their functional properties, such as luminescence.
The use of organic templates allows for the construction of complex inorganic-organic hybrid materials.