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06:35
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Structurally diverse aggregating condensations of Ti(IV) catecholates.
Warren A Wallace1, Pierre G Potvin
1Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, Canada.
Inorganic Chemistry
|October 2, 2007
Summary
The reaction of naphthalene-2,3-diol with titanium(IV) isopropoxide yields diverse titanium complexes, including symmetrical dimers and intricate 6:6 assemblies. These findings reveal complex coordination chemistry and hydrolysis products.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
- Materials Science
Background:
- Titanium alkoxides are versatile precursors in inorganic synthesis.
- Naphthalene-diols offer unique coordination possibilities.
- Understanding the reactivity of titanium precursors is crucial for developing new materials and catalysts.
Purpose of the Study:
- To elucidate the complex reaction products of naphthalene-2,3-diol with titanium(IV) isopropoxide.
- To characterize the structures of resulting titanium complexes.
- To investigate the influence of reaction conditions on product formation.
Main Methods:
- X-ray crystallography for structural determination.
- NMR spectroscopy for solution-state characterization.
- Chemical synthesis and isolation of crystalline products.
Main Results:
- Formation of a symmetrical dimeric complex [TiNp(OiPr)2]2(HOiPr)2.
- Isolation of a partially hydrolyzed 6:6 assembly [Ti3(mu3-O)(mu-Np)2(Np)(mu-OiPr)(OiPr)(HOiPr)2(mu-O)]2.
- Identification of soluble 3:3 and 4:4 condensation products in the supernatant under various conditions.
- Analogous dimeric product observed with titanium(IV) tert-butoxide.
Conclusions:
- The reaction between naphthalene-2,3-diol and titanium(IV) isopropoxide is complex, yielding diverse oligomeric structures.
- Hydrolysis and condensation play significant roles in product formation.
- Reaction conditions, such as solvent, temperature, and presence of drying agents, influence the resulting titanium speciation.
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