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

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Eight binary and tary solid complexes of Eu3+ with pyridine-2, 6-dicarboxylic acid (H2DPC), 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 Eu3+ 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 Eu3+ were discussed in detail.
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