含有5-甲基-3-吡唑甲酸的铅(Ⅱ)配合物:合成、结构和荧光性质（英文）
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摘要
在不同含N辅助配体的存在下,将5-甲基-3-吡唑甲酸(H_2MPCA)与相应的铅(Ⅱ)盐反应制得了2个新的配合物:[Pb(HMPCA)_2(H_2O)_2]·H_2O (1)和[Pb(HMPCA)_2(phen)]·H_2O (2)(phen=菲咯啉)。双核配合物1中双核[Pb(μ_2-HMPCA)]_2单元在一对Pb…O次级键的作用下形成了一维链状结构,这些一维链在氢键的作用下进一步自组装成2D超分子结构。而单核化合物2在Pb…O次级键的作用下形成了Pb_2O_2平面,它们在π…π和氢键作用下堆积形成3D超分子结构。考察了配合物1和2的热稳定性、荧光性能。
In the presence of different N ancillary ligands, treatment of H_2 MPCA with corresponding Pb(Ⅱ) salts afforded two complexes, [Pb(HMPCA)_2(H_2 O)2]·H_2 O(1) and [Pb(HMPCA)2(phen)]·H_2O(2)(H_2 MPCA=5-methyl-1 Hpyrazole-3-carboxylic acid, phen=1,10-phenanthroline). In dinuclear complex 1, the [Pb( μ_2-HMPCA))]_2 units are extended into a 1 D chain structure by a pair of Pb … O secondary bonds. Then, these 1 D chains are further assembled to a 2 D supramolecular structure through intermolecular hydrogen bonds. While complex 2 displays a mononuclear structure, the Pb…O secondary bonds emerged in the Pb_2O_2 rhomb, which are further packed into a3 D supramolecular framework though π … π interactions and hydrogen bonds. The thermal and luminescent properties of complexes 1 and 2 have also been investigated. CCDC: 1854209, 1; 1854210, 2.
In the presence of different N ancillary ligands, treatment of H_2 MPCA with corresponding Pb(Ⅱ) salts afforded two complexes, [Pb(HMPCA)_2(H_2 O)2]·H_2 O(1) and [Pb(HMPCA)2(phen)]·H_2O(2)(H_2 MPCA=5-methyl-1 Hpyrazole-3-carboxylic acid, phen=1,10-phenanthroline). In dinuclear complex 1, the [Pb( μ_2-HMPCA))]_2 units are extended into a 1 D chain structure by a pair of Pb … O secondary bonds. Then, these 1 D chains are further assembled to a 2 D supramolecular structure through intermolecular hydrogen bonds. While complex 2 displays a mononuclear structure, the Pb…O secondary bonds emerged in the Pb_2O_2 rhomb, which are further packed into a3 D supramolecular framework though π … π interactions and hydrogen bonds. The thermal and luminescent properties of complexes 1 and 2 have also been investigated. CCDC: 1854209, 1; 1854210, 2.
引文
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