Sandwich-type Inorganic–Organic Hybrid Solids of Iso-polyvanadate Clusters and Decamethylcucurbit[5]uril

详细信息    查看全文

• 作者：Li-Wei Han ; Jing-Xiang Lin ; Qi Yin ; Bahar Karadeniz ; Hong-Fang Li ; Jian Lü ; Rong Cao
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：March 2, 2016
• 年：2016
• 卷：16
• 期：3
• 页码：1213-1217
• 全文大小：367K
• ISSN：1528-7505

文摘

Three sandwich-type inorganic–organic hybrid solids based on iso-polyvanadate cluster, {V₄O₁₂}^4–, {H₂V₆O₁₈}^4–, or {H₂V₁₀O₂₈}^4–, and decamethylcucurbit[5]uril (Me₁₀CB[5]) have been synthesized under hydrothermal conditions. In the structures of (NH₄)₄[(V₄O₁₂)·(Me₁₀CB[5]@0.5H₂O)₂]·∼15H₂O (1) and (NH₄)₄[(H₂V₁₀O₂₈)·(Me₁₀CB[5]@H₂O)₂]·∼16H₂O (3), tetranuclear {V₄O₁₂}^4– or decanuclear {H₂V₁₀O₂₈}^4– clusters are sandwiched by (NH₄)₂@Me₁₀CB[5] closed molecular capsules, through hydrogen-bonding interactions, whereas compound 2, formulated as Li₄(H₂O)₆[(H₂V₆O₁₈)·(Me₁₀CB[5]@H₂O)₂]·∼14H₂O, is built by hexanuclear {H₂V₆O₁₈}^4– clusters that are covalently sandwiched by Li₂@Me₁₀CB[5] half-open molecular capsules in a way similar to thoset of 1 and 3. Compounds 1–3 represent rare examples of sandwich-type polyoxometalate (POM)-based materials in which POM units are inserted at the inner sphere by either hydrogen or covalent bonds. Compound 2 has shown rational photocatalytic activity toward the degradation of methyl orange solutions under visible light.