Abstract
A new borate [H2EG][B7O10(OH)3] (1) based on [B14020(OH)6]4- polyborate anions has been solvothermally synthesized in the presence of H 2EG as a template (EG = ethylene glycol). The structure was determined by single-crystal X-ray diffraction and further characterized by FTIR, elemental analysis and thermogravimetric analysis. Compound 1 crystallizes in the triclinic system, space group Pī, with a = 8.5095(4), b = 8.8694(4), c = 10.0756(4) Å, α = 95.094(2), β = 96.936(2), γ = 116.844(2)°, V = 664.66(5) Å3. The structure of 1 consists of [B14020(OH)6]4- moiety, which could be regarded as the largest isolated polyborate anion so far. The anions are interlinked via hydrogen bonding to form a 3D supramolecular network, whereas the diprotonated [H2EG]2+are filled in the free space of inorganic borate network and interact with the inorganic framework by extensive hydrogen bonds. It is noteworthy that the EG acts not only as a solvent, but also as a template.
Original language | English |
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Pages (from-to) | 525-530 |
Number of pages | 6 |
Journal | Jiegou Huaxue |
Volume | 28 |
Issue number | 5 |
Publication status | Published - 2009 |
Externally published | Yes |
Keywords
- Boron
- Hydrogen bonds
- Solvothermal synthesis
- Supramolecular network