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合成了单溴四苯基卟啉—— 5 - (邻溴苯基 ) - 1 0 ,1 5 ,2 0 -三苯基卟啉 (H2 L) ,用元素分析 ,红外光谱、电子吸收光谱和氢核磁共振谱确定了其组成和结构。研究了 H2 L在醋酸中电子吸收光谱和在 Ag Cl溶胶上的表面化学反应。结果表明 ,单邻溴四苯基卟啉在冰醋酸中以二酸形式 H4 L2 + 和游离碱 H2 L形式存在 ,二者之间存在着电离平衡 :H4 L2 + =H2 L+2 H+ ;当 p H=7.0～ 1 1 .0时 ,H2 L在Ag Cl溶胶表面发生配位反应生成 Ag( ) L,并且溶液的 p H增大 ,配位反应的速率增大。
The synthesis of monobromotetraphenylporphyrin - 5 - (o - bromophenyl) - 1 0, 1, 5, 2 0 - triphenylporphyrin (H2 L) was studied by elemental analysis, infrared spectroscopy, electron absorption spectroscopy and Hydrogen nuclear magnetic resonance spectroscopy confirmed its composition and structure. The electron absorption spectra of H2L in acetic acid and the surface chemical reaction on AgCl sol were studied. The results showed that monoorthobromobiphenyl porphyrin exists in the form of diacid H4 L2 + and free base H2 L in glacial acetic acid. The ionization equilibrium exists between them: H4 L2 + = H2 L +2 H + When p H = 7.0 ~ 1.1.0, the coordination reaction of H2 L on the surface of AgCl sol resulted in the formation of Ag () L, and the p H of the solution increased and the rate of coordination reaction increased.