PMBP缩4-甲基水杨酰肼铜、锌配合物:合成、结构及锌配合物的荧光性质（英文）

Cu(Ⅱ) and Zn(Ⅱ) Complexes with an Acylhydrazone Derived from 4-Methyl Salicylic Hydrazide and PMBP: Crystal Structures and Fluorescence Property of Zn(Ⅱ) Complex

合成并通过单晶衍射、元素分析、红外光谱表征了配合物[(Cu)(L)(Cl)]·0.5Et OH·1.5H2O(1)和{[Zn(L)(NO3)]·2CH3CN}n(2)的结构(HL为PMBP缩4-甲基水杨酰肼;PMBP=1-phenyl-3-methyl-4-benzoyl-5-pyrazolone)。单晶衍射结果表明,配合物1中,Cu(Ⅱ)离子与来自烯醇化脱质子配体L-的2个O原子和1个N原子,及1个氯离子配位,采取扭曲的平面正方形配位构型。而配合物2中,Zn(Ⅱ)离子采取扭曲的三角双锥配位构型,与来自L-的NO2电子供体,1个单齿配位的硝酸根和相邻配体吡唑啉酮N原子配位,形成沿b轴方向的一维链状结构。在310 nm紫外光激发下,配合物2在434和459 nm处有很强的荧光发射,而配体的荧光发射峰在521 nm,强度明显弱于配合物。此外,固态配体和配合物2的荧光寿命分别为7.352 8和7.755 6μs。

Two complexes [（Cu）（L）（Cl）]·0.5Et OH·1.5H2Oand {[Zn（L）（NO3）]·2CH3CN}n （HL is the acylhydrazone ligand derived from 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone （PMBP） and 4-methyl salicylic hydrazide） have been synthesized and characterized by single-crystal X-ray diffraction, elemental analysis and IR spectroscopy. X-ray diffraction analysis results show that the coordination geometry of the Cu（Ⅱ） ion in 1 is a distorted square planar geometry with nitrogen and two oxygen atoms provided by the enolizated ligand L-1 and one chloride anion. However, in complex 2, the Zn（Ⅱ） ion with a distorted trigonal biyramid coordination geometry is five-coordinated, involving one nitrate anion, one NO2 donor set of an enolizated ligand L- and one pyrazoline nitrogen atom from another adjacent aeylhydrazone ligand, thus forming one dimension chain-like framework along b axis. When excited at 310 nm, complex 2 exhibits two strong emissions at 434 and 459 nm, while the ligand shows relatively weak emission at 521 nm. In addition, luminescent decay data show that the mean lifetime 〈r〉 are 7.352 8 and 7.755 6 μs for HL and complex 2, respectively. CCDC： 1058420, HL.0.5EtOH; 1058421, 1; 1058422, 2.