High-Temperature, High-Pressure Hydrothermal Synthesis of Ba3[B6O10(OH)2](CO3) and Ba6[B12O21(OH)2](CO3)2, Two Barium Borate Carbonates with 2D Layer and 3D Framework Structures
| Autor: | Chun Jui Liao, Yuh-Sheng Wen, Kwang Hwa Lii |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010405 organic chemistry
Cyclohexane conformation FBB Nuclear magnetic resonance spectroscopy 010402 general chemistry 01 natural sciences Barium borate Hydrothermal circulation 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Hydrothermal synthesis Carbonate Physical and Theoretical Chemistry Bar (unit) |
| Zdroj: | Inorganic Chemistry. 57:11492-11497 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/acs.inorgchem.8b01362 |
| Popis: | Two new barium borate carbonates, Ba3[B6O10(OH)2](CO3) (1) and Ba6[B12O21(OH)2](CO3)2 (2), have been synthesized by high-temperature, high-pressure hydrothermal methods at 460 °C and 600 bar and structurally characterized by single-crystal X-ray diffraction, TGA, IR, and MAS 11B NMR spectroscopy. The descriptors of the fundamental building blocks (FBB) of both structures are 2Δ4□:⟨Δ2□⟩=⟨4□⟩=⟨Δ2□⟩. The FBB of 1 has a chair conformation, and the FBBs of 2 have both chair and boat conformations. Compound 1 adopts a noncentrosymmetric 2D layer structure with the Ba2+ cations and CO32– anions between the layers, whereas compound 2 has a centrosymmetric 3D framework structure containing 9- and 10-ring channels with the Ba2+ cations and CO32– anions at the center or on the edges of the channels. The two structures are two of the few examples where the carbonate groups are isolated and occupy their own independent sites. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|