Synthesis and properties of transition-metal complexes of 5,5-bis(N-8-quinolylcarbamoyl)nonane
Abstract
Several metal complexes of 5,5-bis(N-8-quinolylcarbamoyl)nonane (H2L1) and the copper(II) complex of 5,5-bis(N-2-methyl-8-quinolylcarbamoyl)nonane (H2L2) have been synthesised and their spectroscopic properties studied. Whereas complexes of Cu, Ni, Pd, Zn and Cd with H2L1 were obtained, no complex with Co and Pt could be isolated. On the other hand, the copper complex of H2L2 was readily obtained, but the nickel complex could not be isolated. These compounds can be formulated as [ML] in which the amide groups of H2L1 and H2L2 are fully deprotonated. They were characterized by mass, IR and 1H NMR spectroscopy. Their ultraviolet–visible, luminescence and redox properties were also investigated.