Coordination chemistry of N-aminopropyl pendant arm derivatives of mixed N/S-, and N/S/O-donor macrocycles, and construction of selective fluorimetric chemosensors for heavy metal ions
作者:M. Carla Aragoni、Massimiliano Arca、Andrea Bencini、Alexander J. Blake、Claudia Caltagirone、Antonello Decortes、Francesco Demartin、Francesco A. Devillanova、Enrico Faggi、Luisa Stella Dolci、Alessandra Garau、Francesco Isaia、Vito Lippolis、Luca Prodi、Claire Wilson、Barbara Valtancoli、Nelsi Zaccheroni
DOI:10.1039/b506785e
日期:——
The coordination chemistry of the N-aminopropyl pendant arm derivatives (L1c-4c) of the mixed donor macrocyclic ligands [12]aneNS2O, [12]aneNS3, [12]aneN2SO, and [15]aneNS2O2(L1a-4a) towards Cu(II), Zn(II), Cd(II), Hg(II), and Pb(II) in aqueous solution has been investigated. The protonation and stability constants with the aforementioned metal ions were determined potentiometrically and compared,
混合供体大环配体[12] aneNS2O,[12] aneNS3,[12] aneN2SO和[15] aneNS2O2(L1a-4a)的N-氨基丙基侧链衍生物(L1c-4c)对Cu()的配位化学II),Zn(II),Cd(II),Hg(II)和Pb(II)的水溶液已进行了研究。用电位法测定上述金属离子的质子化常数和稳定性常数,并在可能的情况下将其与未官能化的大环化合物的质子化常数和稳定性常数进行比较。测量值表明,水中的Hg(II)和Cu(II)对所有考虑的配体都具有最高的亲和力,而N-氨丙基侧基臂微弱地协调了金属中心。生长适用于X射线衍射分析的晶体以形成高氯酸盐(H2L1c)(ClO4)2.dmf和1:1配合物[Cd(L3a)(NO3)2](1),[Cu(L4a) dmf](ClO4)2(2),[Zn(L1c)(ClO4)] ClO4(3),[Cd(L1c)(NO3)] NO3(4)和