含3,4-吡唑二甲酸锰(Ⅱ)/锌(Ⅱ)配合物的合成、结构和荧光性能

Mn(Ⅱ)/Zn(Ⅱ) Complexes Based on 3,4-Pyrazoledicarboxylic Acid:Syntheses,Structures,and Luminescent Properties

在不同的含N辅助配体咪唑(ImH)和5-(4-吡啶基)四唑(4-PT)的存在下,将3,4-吡唑二羧酸(H_(3)pdc)与相应的Mn(Ⅱ)/Zn(Ⅱ)金属盐反应制得2种配合物:[Mn(Hpdc)(ImH)(H_(2)O)]_(n)(1)和[Zn(Hpdc)(4-PT)(H_(2)O)_(3)]·2H_(2)O(2)。在一维配位聚合物1和单核配合物2中,Hpdc_(2)-配体分别采用μ)_(2)-κ∶O,N;κ∶O',O″和O,N-螯合的配位模式,而且1和2中的ImH和4-PT辅助配体均为单齿配位。在O—H…O和O—H…N分子间氢键的作用下,配合物1中的1D聚合链堆积成了三维的超分子结构。2中,相邻[Zn(Hpdc)(4-PT)(H_(2)O)_(3)]单元在O—H…O和O—H…N分子间氢键的作用下堆积形成2D结构,这些2D层状结构与结晶水分子进一步连接形成了三维超分子结构。此外,还考察了配合物1和2的荧光性能以及配合物1的电化学性质。

In the presence of N ancillary ligands,imidazole(ImH)and 5-(4-pyridyl)tetrazole(4-PT),treatment of 3,4-pyrazoledicarboxylic acid(H_(3)pdc)with corresponding Mn(Ⅱ)/Zn(Ⅱ)metal salts afforded two complexes,[Mn(Hpdc)(ImH)(H_(2)O)]_(n)(1)and[Zn(Hpdc)(4-PT)(H_(2)O)_(3)]·2H_(2)O(2).In the 1D coordination polymer 1 and mononuclear complex 2,the Hpdc^(2-) ligand adoptedμ)_(2)-κ∶O,N;κ∶O',O″coordination mode and O,N-chelating mode,respectively,while the ImH and 4-PT ligands in 1 and 2 both acted as a monodentate ligand.In 1,in the influence of intermolecular N—H…O and O—H…O hydrogen bonds,the 1D coordination chains are packed into a 3D supramolecular structure.In 2,in the function of intermolecular O—H…O and O—H…N hydrogen bonds,the adjacent mononuclear components[Zn(Hpdc)(4-PT)(H_(2)O)_(3)]are packed into 2D structures,then these 2D layers and the lattice water molecules are interlinked and generated a 3D supramolecular architecture.Moreover,the luminescent properties of complexes 1 and 2 as well as the electrochemical property of 1 were also investigated.