Synthesis, complex formation kinetics and thermodynamic study of some acyclic polyamine and N<sub>2</sub>O<sub>2</sub> ligands with copper(II)
作者:Hava Ozay、Yakup Baran
DOI:10.1080/00958972.2010.535144
日期:2010.12.20
10-triazatridecanedinitrile trihydrochloride (L2 ), and 2,2′-(ethane-1,2-diyl) bis(methylazanediyl) diethanol (L3 ) were prepared and their structures investigated by FT-IR, NMR, and MS. The kinetics of complex formation between Cu(II) and L1, L2, and L3 were investigated in acidic aqueous solutions using the stopped-flow method. The stability constants of the complexes were determined by spectrophotometric
多齿配体、3-(2-氨基环己基氨基)-2-(2-氨基环己基氨基甲基)丙酸(L1)、4,7,10-三氮杂三烷二腈三盐酸盐(L2)和2,2'-(乙烷-1,2制备了-二基)双(甲基氮杂二基)二乙醇 (L3),并通过 FT-IR、NMR 和 MS 研究了它们的结构。使用停流法在酸性水溶液中研究了 Cu(II) 与 L1、L2 和 L3 之间络合物形成的动力学。配合物的稳定性常数通过分光光度法滴定(T = 293 K,μ = 0.1 mol L-1 NaClO4),使用配备蠕动泵和 pH 计的二极管阵列紫外-可见分光光度计确定。复合物的稳定常数为 CuL1 > CuL2 > CuL3。这些配合物的活化焓 (ΔH#) 对于 CuL1 为 55 kJ mol-1,对于 CuL2 为 61 kJ mol-1,对于 CuL3 为 36 kJ mol-1,