Compounds	uO-H	uC=O ring	uC=O carbox.	uN=C imine	uCOO⁻asy.	uCOO⁻sy.	uasy.	usy.	uC=C arom.	uC-H arom.	uC-C aliph.	uC-H aliph.	uM-N	uM-O
(HL)	3421	1645	1724	1608	1419	1369	-	-	1586	2939	1197	2900	-	-
[Mn(HL)₂(N₃)₂(H₂O)₂]∙H₂O	3390	1647	Overlap	1593	1417	1369	2123 2058	1311	1570	3064	1190	2927	543	505
[Co(HL)₂(N₃)₂]∙H₂O	3442	1616	Overlap	1591	1421	1371	2123 2102	1311	1573	Overlap	1197	2935	505	445
[Ni(HL)₂(N₃)₂]∙3H₂O	3390	1624	1735	1593	1417	1363	2121 2036	1311	1575	Overlap	1168	Overlap	545	475
[Zn(HL)₂(N₃)₂]∙3H₂O	3464	1614	1735	1591	1417	1373	2065	1317	1560	3066	1141	2933	542	445
[Cd(HL)₂(N₃)₂]∙2H₂O	3446	1616	Overlap	1591	1419	1375	2065	1317	1558	3064	1188	2930	505	460
[Hg(HL)₂(N₃)₂]∙3H₂O	3346	1635	Overlap	1591	1417	1369	2125 2036	1313	1558	3064	1188	2900	505	453