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利用微分脉冲伏安法研究了对称四甲基六元瓜环(TMeQ[6])与过渡金属的相互作用。结果表明该主体大环化合物对Pb2+和Cd2+离子具有较好的选择性作用。伏安数据测定表明Pb2+及Cd2+离子与对称四甲基六元瓜环以nM2+/nTMeQ[6]=2配位,其配合平衡常数分别为(KPb2+=2.12×109L2·mol-2,KCa2+=2.10×109L2·mol-2)。Pb2+离子与TMeQ[6]的晶体结构进一步证实了上述实验结果。
The differential pulse voltammetry was used to study the interaction of tetramethylcyclohexagarcosyl ring (TMeQ [6]) with transition metal. The results show that the main macrocyclic compound has a good selective effect on Pb2 + and Cd2 + ions. Voltammetric data showed that the equilibrium constants of Pb2 + and Cd2 + were (KPb2 + = 2.12 × 109L2 · mol-2, KCa2 + = 2.10) with symmetric tetramethylcarbamates with nM2 + / nTMeQ [6] = 2, × 109L2 · mol-2). The crystal structure of Pb2 + ions and TMeQ [6] further confirmed the above experimental results.