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The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
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N→Sn-Coordinated Stannaoxidoborates Containing a SnB4O6 Unit.
Barbora Mairychová1, I V Kityk2, Artur Maciag2
1Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice , 53210 Pardubice, Czech Republic.
Inorganic Chemistry
|February 2, 2016
Summary
We synthesized novel N→Sn-coordinated stannaoxidoborates with a unique SnB4O6 core, expanding pentaborate chemistry. These compounds exhibit interesting structural, thermal, and nonlinear-optical properties, paving the way for new materials.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Coordination Chemistry
Background:
- Pentaborate anions ([B5O6R4](-)) are known structures in boron chemistry.
- Substitution of the central boron atom in pentaborates offers a route to novel inorganic frameworks.
- Tin-containing boron clusters are less explored, presenting opportunities for new material properties.
Purpose of the Study:
- To synthesize and characterize new N→Sn-coordinated stannaoxidoborates.
- To investigate the structural, thermal, and optical properties of these novel compounds.
- To explore the potential of the nonsymmetric stannaoxidoborate unit for nonlinear-optical applications.
Main Methods:
- Synthesis of four new stannaoxidoborate compounds (6-9).
- Characterization using elemental analysis, electrospray ionization mass spectrometry, and NMR spectroscopy.
- Structural elucidation via single-crystal X-ray diffraction for compounds 6-8.
- Analysis of linear and thermal properties using electronic absorption spectra and differential scanning calorimetry.
- Investigation of second-order nonlinear-optical properties.
Main Results:
- Successful synthesis of N→Sn-coordinated stannaoxidoborates H[LSnB4O6R4] with L = [2,6-(Me2NCH2)C6H3](-) and R = Ph, 4-Br-Ph, 3,5-(CF3)2-Ph, 4-CHO-Ph.
- Compounds 6-9 feature a novel spirobicyclic arrangement with a nonsymmetric SnB4O6 unit, derived from pentaborate structures.
- Structural analysis confirmed the N→Sn coordination and the presence of two six-membered SnB2O3 rings.
- Linear and thermal properties were evaluated, indicating potential for material applications.
- Compounds 6, 7, and 9 demonstrated second-order nonlinear-optical properties.
Conclusions:
- The study reports the first N→Sn-coordinated stannaoxidoborates, expanding the known family of pentaborate derivatives.
- The unique SnB4O6 motif and spirobicyclic structure offer a new platform for designing functional inorganic materials.
- The observed nonlinear-optical properties suggest potential applications in photonics and optoelectronics.
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