What is it about?

This scientific publication describes the formation of a coordination polymer that occurs by reacting a silver salt and a gadolinium salt with a suitable ligand (dipic). The resulting coordination polymer has been crystallized from an aqueous solution and analyzed using single crystal X-ray diffraction to determine its molecular structure. The coordination polymer consists of silver and gadolinium atoms connected to each other by the multidentate dipic ligand in a chain-like structure. The gadolinium atoms are each bonded to two dipic ligands and three water molecules in a specific geometric arrangement. Meanwhile, the silver atoms bind to the carboxylate groups of both dipic ligands. This study provides insight into how metal atoms and ligand molecules interact with each other to form coordination polymers and can help in the development of new materials. Nowadays coordination polymers have developed to an entire highly exciting field with a wide range of applications.

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Why is it important?

This work is important because it expands our understanding of how metal cations and organic anions interact with each other to create coordination polymers. Understanding these interactions is crucial for the development of new materials with unique properties, such as materials with improved mechanical or electrical properties, or materials that can be used as molecular sieves, molecular storage devices or in new types of sensors. The study of heterometallic complexes, which are compounds that contain more than one type of metal atom, is an important area of research in chemistry because they have potential applications in catalysis, electronics, and medicine. The specific complex studied in this research, Ag[Gd(dipic)2(H2O)3]·3H2O, is of particular interest because it is the first structurally characterized silver/lanthanide complex, which provided new insights into the behavior of such compounds.


This is my very first scientific publication and I find the beauty of formation of a heterometallic coordination polymer comprising silver and gadolinium ions and carboxylate-containing ligands still thrilling. An intriguing feature is how such a complex structure is formed by reacting simple compounds together. By using X-ray diffraction, we were able to determine the specific molecular arrangement of the atoms in the coordination polymer, which I find is a highly exciting technique. This study expands our understanding of how metal ions and organic molecules interact with each other and can lead to the creation of new materials with unique properties. It's exciting to see how chemistry research continues to advance and uncover new discoveries, and I am thrilled to see what future studies in this field have brought and will continue to bring.

Prof. Dr. Thomas Ernst Müller
Ruhr-Universitat Bochum

Read the Original

This page is a summary of: The first structurally characterized silver/lanthanide heterometallic complex; synthesis and crystal structure of Ag[Gd(dipic)2(H2O)3]·3H2O (where H2dipic = 2,6- pyridinedicarboxylic acid), Polyhedron, January 1992, Elsevier, DOI: 10.1016/s0277-5387(00)83145-9.
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