Two new, dioxo tetraamine ligands L1 and L2 have,been synthesized and characterized. by 1H NMR IR MS and elemental analysis Their protonstion constants and complex formation constants,with Cu2+ have been determined by...Two new, dioxo tetraamine ligands L1 and L2 have,been synthesized and characterized. by 1H NMR IR MS and elemental analysis Their protonstion constants and complex formation constants,with Cu2+ have been determined by potentiometric titration展开更多
14-Membered macrocyclic dioxotetraamines deprotonate stepwisely upon coordination to cupric ions. Singly- and doubly-deprotonated complexes are the main species, While for 13-membered analogs, non- and doubly-deproton...14-Membered macrocyclic dioxotetraamines deprotonate stepwisely upon coordination to cupric ions. Singly- and doubly-deprotonated complexes are the main species, While for 13-membered analogs, non- and doubly-deprotonated complexes are the main species.展开更多
文摘Two new, dioxo tetraamine ligands L1 and L2 have,been synthesized and characterized. by 1H NMR IR MS and elemental analysis Their protonstion constants and complex formation constants,with Cu2+ have been determined by potentiometric titration
文摘14-Membered macrocyclic dioxotetraamines deprotonate stepwisely upon coordination to cupric ions. Singly- and doubly-deprotonated complexes are the main species, While for 13-membered analogs, non- and doubly-deprotonated complexes are the main species.
