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Diorganotin-based coordination polymers derived from sulfonate/phosphonate/phosphonocarboxylate ligands
Ravi Shankar1, Archana Jain, Gabriele Kociok-Köhn
1Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India. shankar@chemistry.iitd.ac.in
Inorganic Chemistry
|January 22, 2011
Summary
This study explores the synthesis and structural characterization of novel organotin compounds. The research highlights how solvent choice influences the formation of diverse tin-based coordination polymers and self-assemblies.
Area of Science:
- Organometallic Chemistry
- Coordination Polymers
- Materials Science
Background:
- Diorganotin precursors with alkoxy and alkane sulfonate ligands are versatile building blocks.
- Understanding the influence of reaction conditions on the self-assembly of organometallic compounds is crucial for materials design.
Purpose of the Study:
- To investigate the reactions of diorganotin precursors with phosphonic acids.
- To elucidate the role of solvent in directing the formation of tin-based coordination polymers and self-assemblies.
- To characterize the resulting structures using X-ray crystallography.
Main Methods:
- Synthesis of diorganotin(IV) compounds with phosphonate and sulfonate ligands.
- Reaction optimization in different solvents (methanol, dichloromethane).
- Structural determination via X-ray crystallographic analysis.
Main Results:
- Identical tin-phosphonate products formed in methanol, while dichloromethane yielded a different solvated product.
- Diverse coordination polymers (1D, 2D, 3D) were constructed, featuring trinuclear tin entities and various cyclic rings.
- In situ esterification of carboxylic groups was observed, leading to methylpropionate functionalities.
Conclusions:
- Solvent choice significantly impacts the self-assembly of organotin compounds.
- A variety of tin-based coordination polymers and 3D frameworks can be accessed through controlled synthesis.
- The study provides insights into the structural diversity and formation mechanisms of organotin coordination materials.
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