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以2-(对甲基苯甲酰基)苯甲酸(2-PMBBA)和1,10-邻菲啰啉(Phen)为配体合成了一个新的锌(Ⅱ)配合物Zn(2-PMBBA)2(Phen)。该配合物晶体属正交晶系,空间群Pccn,晶胞参数:a=1.371 6(4)nm,b=1.336 8(4)nm,c=1.928 7(5)nm,V=3.536 4(17)nm3,Dc=1.360 g·cm-3,Z=4,μ(Mo Kα)=0.746 mm-1,F(000)=1 496,最终偏离因子R1=0.035 8,wR2=0.086 1。在标题配合物中,中心锌(Ⅱ)离子的配位数是4,处于变形的四面体配位环境中,这是不多见的。本工作还测定了标题配合物的电化学、磁性及荧光性能。结果表明:循环伏安过程中,配合物的电子转移是不可逆的,对应的电极反应是Zn(Ⅱ)/Zn(0);在300～7 K,配合物有抗磁性;当激发波长为224 nm时,配合物在450和472 nm处有强的荧光发射峰。
A new Zn (Ⅱ) complex Zn (2-PMBBA) was synthesized from 2- (p-methylbenzoyl) benzoic acid (2-PMBBA) and 1,10-phenanthroline (Phen) 2 (Phen). The crystal of the complex is orthorhombic with a space group of Pccn with a = 1.371 6 (4) nm, b = 1.336 8 (4) nm, c = 1.928 7 17) nm3, Dc = 1.360 g · cm-3, Z = 4, μ (Mo Kα) = 0.746 mm-1, F (000) = 1 496, final deviation factor R1 = 0.035 8, wR2 = 0.086 1. In the title complexes, the central coordination number of zinc (II) ions is 4, which is in the deformed tetrahedral coordination environment, which is rare. The work also determined the electrochemical, magnetic and fluorescent properties of the title complex. The results showed that the electron transfer of the complex was irreversible during the cyclic voltammetry and the corresponding electrode reaction was Zn (Ⅱ) / Zn (0). At 300-7 K, the complex was diamagnetic. When the excitation wavelength was 224 nm, the complexes have strong fluorescence emission peaks at 450 and 472 nm.