Abstract
A new dioxotetraamine ligand 6-(9-fluorenyl)-1,4,8,11-tetraazaundecane-5,7-dione (L) and its copper(II) complex have been synthesized. Detailed studies have been made on solution chemistry of Cu(II), Ni(II) and Co(II) complexes of the ligand by pH-potentiometric and fluorimetric titration as well as cyclic voltammetry. The coordination of Cu 2+ and Ni 2+ quenches the fluorescence of fluorenyl in the ligand through an electron transfer mechanism. The crystal structure of [Cu(H −2L)] was determined.
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