%0 Journal Article %A Lei, Shan %A Jin, Bo %A Peng, Rufang %A Zhang, Qingchun %A Chu, Shijin %D 2017 %T Synthesis of a tetrazine-based catecholamide derivative and its evaluation as a chelating agent for removal of Cd(II), Co(II), and Cu(II) %U https://tandf.figshare.com/articles/journal_contribution/Synthesis_of_a_tetrazine-based_catecholamide_derivative_and_its_evaluation_as_a_chelating_agent_for_removal_of_Cd_II_Co_II_and_Cu_II_/5099539 %R 10.6084/m9.figshare.5099539.v2 %2 https://ndownloader.figshare.com/files/8649778 %K CAM ligand %K metal complexes %K spectrophotometric titration %K complexation capacities %X

The synthesis and structural characterization of a tetrazine-based catecholamide (CAM) ligand, N,N′-bis(N″-(aminoethyl)-2,3-bis(hydroxy)benzamide)-1,2,4,5-tetrazine-3,6-diamine (5), were investigated. All compounds were characterized by 1H NMR spectroscopy, 13C NMR spectroscopy, and FTIR spectroscopy. The protonation equilibria of 5 and complexation capacities (log βpqr) of Cd2+, Co2+, and Cu2+ complexes of 5 were evaluated through potentiometric titration and spectrophotometric titration, respectively. Species independent pM value (=−log [M]free) was used to compare metal affinities with the final sequence Cu2+ > Cd2+ > Co2+. Results show that 5 has potential for heavy metal removal.

%I Taylor & Francis