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

摘要

In the presence of different N ancillary ligands,treatment of H2MPCA with corresponding Pb(Ⅱ) salts afforded two complexes,[Pb(HMPCA)2(H2O)2]·H2O (1) and [Pb(HMPCA)2(phen)]·H2O (2) (H2MPCA=5-methyl-1H-pyrazole-3-carboxylic acid,phen=1,10-phenanthroline).In dinuclear complex 1,the [Pb(μ2-HMPCA))]2 units are extended into a 1D chain structure by a pair of Pb … O secondary bonds.Then,these 1D chains are further assembled to a 2D supramolecular structure through intermolecular hydrogen bonds.While complex 2 displays a mononuclear structure,the Pb…O secondary bonds emerged in the Pb2O2 rhomb,which are further packed into a 3D 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.%在不同含N辅助配体的存在下,将5-甲基-3-吡唑甲酸(H2MPCA)与相应的铅(Ⅱ)盐反应制得了2个新的配合物:[Pb(HMPCA)2(H2O)2]· H2O (1)和[Pb(HMPCA)2(phen)]·H2O (2)(phen=菲咯啉).双核配合物1中双核[Pb(μ2-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Pb2O2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.