Two New Zinc Phosphonates with Triazine-Based Phosphonic Acids

详细信息    查看全文

• 作者：Ruibiao Fu ; Shengmin Hu ; Xintao Wu
• 刊名：Crystal Growth & Design
• 出版年：2015
• 出版时间：October 7, 2015
• 年：2015
• 卷：15
• 期：10
• 页码：5021-5027
• 全文大小：486K
• ISSN：1528-7505

文摘

Hydrothermal reactions of Zn(CH₃COO)₂路2H₂O with two new triazine-based phosphonic acids, 2,4,6-triglyphosate-1,3,5-triazine (H₉L1) and 4,6-biglyphosate-2-hydroxyl-1,3,5-triazine (H₆L2), afforded two new zinc phosphonates, namely, [(C₅H₁₄N₂)Zn₃(HL1)(H₂O)]路3.5H₂O (1) and [(C₅H₁₄N₂)Zn₂L2]路3H₂O (2), respectively. The two zinc phosphonates were structurally characterized through single-crystal X-ray diffraction. Compound 1 is a three-dimensional (3D) framework in that Zn鈥揙鈥揚 chains are connected by HL1^{8鈥?/sup> anions with hendecadentate modes. In compound 2, each L26鈥?/sup> anion links four Zn2 binuclear units to form a 3D framework. In both compounds 1 and 2, the protonated 2-methylpiperazines are encapsulated into the channels of 3D frameworks. Thermogravimetric analysis and powder X-ray diffraction reveal that compounds 1 and 2 are thermally stable up to 200 and 160 掳C under an air atmosphere, respectively. Compounds 1 and 2 display near-UV and purple luminescence with maximal bands at 377 and 402 nm, respectively. It worth noting that the luminescence of solids 1 and 2 can be preserved after compounds 1 and 2 are heated at 200 and 160 掳C for 2 h under an air atmosphere, respectively. In addition, the ion-exchange property of compound 1 was also studied.}