含有金属水链的3,5-吡唑二甲酸铜配位聚合物的合成及热稳定性

Abstract

Abstract: The 3,5dicarboxy1Hpyrazole reacted with Cu(NO₃)₂in the mixed CH₃CN/H₂O solvents at 120 ℃ for 72 h, and blue crystals were obtained. The molecular formula of the compound was {［Cu₃(pdc)₂(H₂O)₇］·2H₂O}_n. The compound was characterized by elemental analysis, IR spectrum, single-crystal X-ray diffraction, powder Xray diffraction and thermal analysis. The results show that three Cu²⁺ ions and two pdc^3- anions interconnect to form the neutral molecule Cu₃(pdc)₂, which is further joined to form a onedimensional (1D) puckered chain by coordinated H₂O molecule as bridging ligand, then 1D chains are further joined into a three-dimensional supramolecular network through hydrogen bonding. The coordinated H₂O molecules of Cu²⁺ ions and lattice H₂O molecules form one-dimensional metal-water chain through hydrogen bonding.

Key words: coordination polymer, crystal structure, solvo-thermal, 3,5dicarboxy1Hpyrazole

CLC Number:

O629.74

SU Lijuan, ZHANG Xiaoyu, ZHOU Ruisha. Synthesis and Thermal Stability of a Copper 3,5PyrazoleDicarboxylate Coordination PolymerContaining MetalWater Chain[J].Journal of Jilin University Science Edition, 2020, 58(4): 1015-1019.

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Synthesis and Thermal Stability of a Copper 3,5PyrazoleDicarboxylate Coordination PolymerContaining MetalWater Chain

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