NMR and IR Studies on Eight Complexes of Eu with Three Kinds of Ligands

摘要

Eight binary and ternary solid complexes of Eu 3+ with pyridine 2, 6 dicarboxylic acid (H 2DPC), 1,10 phen anthroline (phen) and methylbenzoic acid (MBA), including o MBA, m MBA and p MBA, were synthesised. Their compositions were confirmed by elemental analysis. The coordination mode of ligands with Eu 3+ was studied by NMR and IR. The coordination number of eight complexes was also investigated. Furthermore, the influence on chemical shift and NMR spectrum shape by induction effect, screening effect and paramagnetic character of Eu 3+ were discussed in detail.