International Journal of Inorganic Chemistry

Research Article

Synthesis, Characterization of La(III), Nd(III), and Er(III) Complexes with Schiff Bases Derived from Benzopyran-4-one and Thier Fluorescence Study

Table 3

The most important data of proton NMR spectra of the Schiff and their complexes.
SymbolC5–OHC7–OHCH=N
L114.45 s, 1H13.63 s, 1H10.21 s, 1H
La-L1—13.63 s, 1H10.21 s, 1H
Nd-L1—13.63 s, 1H10.22 s, 1H
Er-L1—13.63 s, 1H10.23 s, 1H
L216.10 s, 2H14.30 s, 2H10.24 s, 2H
La-L216.10 s, 2H13.00 s, 1H10.12, 10.24 d, 1H
Nd-L216.10 s, 2H13.05 s, 1H10.12, 10.24 d, 1H
Er-L216.10 s, 2H13.10 s, 1H10.12, 10.24 d, 1H
La2-L216.10 s, 2H—10.00 s, 2H
Nd2-L216.10 s, 2H—10.00 s, 2H
Er2-L216.10 s, 2H—10.00 s, 2H
L315.20, 14.84 s, 1H14.26, 13.04 s, 1H10.23 s, 2H
La-L315.20, 14.84 s, 1H—10.00 s, 2H
Nd-L314.00 s, 1H14.26, 13.04 s, 1H10.21 s, 2H
Er2-L3—14.26, 13.04 s, 1H10.22 s, 2H