Influence of Different Carboxylic Acid Ligands on Luminescent Properties of Eu(Lc)₃phen (Lc = MAA, AA, BA, SA) Complexes

Table 2

Character FT-IR bands (cm⁻¹) of the ligands and their complexes.

Ligands and complexes	𝜈O−H	𝜈C=O	𝜈as(−COO−)	𝜈s(−COO−)	𝜈C−N	𝜈C=C	𝜈C−H
MAA	2969	1737			1640
AA	3447	1724			1636
BA	3418	1687			1601
SA	3386	1694
phen	3391				1643	1587	853,728
Eu(MAA)3phen	3445		1562	1427	1645	1529	848,019
Eu(AA)3phen	3409		1597	1453	1643	1547	848,723
Eu(BA)3phen	3413		1567	1422	1611	1531	850,705
Eu2(SA)3phen2	3415		1569	1427		1533	851,664