Synthesis, Vibrational Spectra, and Structure of 4'-(4',-Benzo-15-Crown-5)oxy-2,2':6',2'-Terpyridine (L) and Its Transition Metal Complexes. Extraction and Ion-Selective Properties of L

摘要

Complexes of Co(II), Ni(II), Zn(II), and Cu(II) perchlorates and hexafluorophosphates with 4'-(4"-benzo-15-crown-5)oxy-2,2':6',2"-terpyridine (L) [M(L)2](ClO4)2 · 3H2O and [M(L)2](PF6)2 · 2H2O were synthesized. The spectral criteria of ligand coordination through the terpyridine nitrogen atoms were established. An assumption concerning the benzo-15-crown-5 conformation in the ligand molecule in the synthesized complexes was made. The extraction and ion-selective properties of L were studied.