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Titanium oxo/alkoxo clusters with both phosphonate and methacrylate ligands
Matthias Czakler1, Christine Artner1, Ulrich Schubert1
1Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.
Monatshefte Fur Chemie
|July 21, 2015
Summary
Titanium oxo clusters were synthesized using titanium isopropoxide, methacrylic acid, and phosphonates. Adding water to the reaction mixture altered the cluster composition, yielding different titanium oxo cluster structures.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Coordination Chemistry
Background:
- Titanium alkoxides are versatile precursors for synthesizing titanium-based materials.
- Organophosphonates and methacrylates serve as useful ligands in coordination chemistry.
Purpose of the Study:
- To investigate the synthesis of novel titanium oxo clusters.
- To explore the influence of reaction conditions, specifically water addition, on cluster formation.
Main Methods:
- Reaction of titanium(IV) isopropoxide with bis(trimethylsilyl) phosphonates and methacrylic acid.
- Controlled addition of water to influence the hydrolysis and condensation reactions.
Main Results:
- Synthesis of Ti5O(OiPr)11(OMc)(O3PR)3 and Ti10(OiPr)16(OMc)4(O3PCH2CH=CH2)10 clusters.
- Formation of Ti6O4(OiPr)10(OMc)2(O3PR)2 oxo clusters upon water addition, with diverse R groups.
Conclusions:
- The hydrolysis degree significantly impacts the structure and composition of titanium oxo clusters.
- This work expands the library of accessible titanium oxo cluster architectures.
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