对羟基苯甲醛-3,4,5-三羟基苯甲酰腙的合成及其导电性能

Synthesis and Electric Conductivity of 4-Hydroxybenzaldehyde-3,4,5-trihydroxybenzhydrazone

以二苯氨基脲为催化剂,3,4,5-三羟基苯甲酰肼(2)和对羟基苯甲醛(3)通过缩合反应合成了一个新型的酰腙化合物——对羟基苯甲醛-3,4,5-三羟基苯甲酰腙(H2L),其结构和性能经1H NMR,IR,元素分析和TGDTG表征。在最佳反应条件[二苯氨基脲0.12 g(1.58%),2 25 mmol,n(2)∶n(3)=1.0∶1.0,回流反应7 h]下制备的H2L,收率66.85%,初始分解温度为170.06℃,导电率为9.9μs·cm-1。H2L与硝酸锰和吡啶形成的配合物[Mn(LPy)2]溶液的电导率为4.1×102μs·cm-1。

A novel acylhydrazone compound,4-hydroxybenzaldehyde-3,4,5-trihydroxybenzoyl hydrazone（H2L）,was synthesized by condensation of 3,4,5-trihydroxybenzoylhydrazine （2） with 4-hydroxybenzaldehyde（3） using 1,5-diphenylcarbazide as the catalyst.The structure and properties were characterized by 1H NMR,IR,elemental analysis and TG-DTG.The optimum reaction conditions refluxed for 7 h were as follows：1,5-diphenylcarbazide was 0.12 g（1.58%）,2 was 25 mmol,n（2） ∶ n（3） was 1.0 ∶ 1.0.The yield of H2L was 66.85% under the optimum reaction conditions.The initial decomposition temperature of H2L was 170.06 ℃ and conductivity was 9.9 μs · cm-1.Conductivity of the complex [Mn （LPy） 2],which was obtained by coordination of H2L with Mn （NO3） and pyridine,was 4.1 ×102 μs · cm-1.