A novel soft N and hard O donor combined ligand including N, N, N', N'-tetrakis(2-pyridylmethyl)-1, 3- diaminopropane-2-amide structure (TPTNA) was successfully synthesized. Its structure and complexation of Eu3+in solid state and methanol solution respectively were investigated by X-ray crystallography, UV-vis titration and EXAFS spectroscopy. As a result, the chemical stoichiometry of Eu3+complex with TPTNA was determined to be 1: 1 by X-ray crystallography. It was found that one amide unit, two pyridine groups from TPTNA coordinated with one Eu3+. However, the Eu-O and Eu-N bond lengths obtained from theoretical fitting of the EXAFS data were consistent with the results from X-ray crystallography studies, reflecting retention of the structure in methanol solution.
ASJC Scopus subject areas
- Chemical Engineering(all)