酰胺多胺配体Cu(Ⅱ)配合物的稳定性和酸分解动力学  

Stability, Kinetics of Acid Decomposition of Cu(Ⅱ) Complexes of Novel Polyamide-polyamino Ligand

作　　者：郭延河[1] 高东昭[1] 林海 林华宽[1] 盖庆春[1] 朱守荣[1] 

机构地区：[1]南开大学化学系 [2]吸附与分离功能高分子材料国家重点实验室,天津300071

出　　处：《高等学校化学学报》2004年第1期103-107,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 99710 18)资助

摘　　要：合成了酰胺多胺配体 ( L) ,测定了 5,10 ,15和 2 5℃时其 Cu( )配合物的稳定常数 ,用标准摩尔焓变ΔH 0_m 和标准摩尔熵变ΔS0_m 解释了温度对稳定性的影响 ,并利用停流技术 ( Stopped- flow)研究了 Cu L配合物在 0 .0 4～ 2 .3m ol/L( I=2 .34 mol/L Na Cl)盐酸溶液中的酸分解动力学 .提出了反应机理 ,并求得了速控步骤的活化能 Ea,标准摩尔活化熵 Δ≠ S0_m 和标准摩尔活化焓 Δ≠ H0_m.A polyamide polyamino ligand was synthesized. The stability constants of its copper (Ⅱ) complexes at 5, 10, 15 and 25 ℃ were determined. The standard molar entropy of formation ΔS{0_} m and standard molar enthalpy of formation ΔH{0_} m were obtained and used to discuss the effect of temperature on the stability of the complexes. The acid decomposition of CuL assisted by 0.04—2.34 mol/L(I= 2.34 mol/L NaCl) hydrochloride was investigated by using stopped-flow technique. The mechanism was given and the activation energy E a, standard molar entropy of activation Δ≠S{0_} m and standard molar enthalpy of activation Δ≠H{0_} m of the rate-determining step were calculated.

关 键 词：酰胺多胺配体 Cu(Ⅱ)配合物 稳定性 酸分解 分解动力学 铜 

分 类 号：O614.121[理学—无机化学] O641.4[理学—化学]