Table 3.

FT-IR spectral bands and their probable assignments in [cm^-1] for transition Metal-Mg tartarate complexes (C1 to C6)

Sr. No	C1	C2	C3	C4	C5	C6	Assignments
1	3311	3378	3364	3311	3343	3330	ν asy (H-OH)
2	1570	1626	1610	1602	1606	1604	ν asy (C=O)
3		1562	1428		1429	1430	ν sy(C=O),asy(c-c)
4	1382	1369	1361	1373	1325	1362	ν sy c-o(carboxyl)
5	1298	1230	1277	1289	1231	1289	ν asy C-C
6	1225	1230	1231	1227	1210	1227	ν asy C-O
7	1121	1134	1107	1113	1106	1092	ν C-O(alcohol)
8	1038	1048	1050	1050	1054	1040	ν C-O(alcohol)
9	934	920	927	925	919	925	ν sym C-O),d(o-c=o)
10	716	716	717	717	742	717	ν sym C-C
11	632	600	623	605	638	624	ν (H-O-H)
12	549	545	535	543	534	540	ν (M-O) (C-C)

C1- MnMg(C₄H₄O₆)₂^.4H₂O, C2- FeMg(C₄H₄O₆)₂^.10H₂O, C3- CoMg(C₄H₄O₆)₂^.8H₂O, C4- NiMg(C₄H₄O₆)₂^.10H₂O, C5- CuMg(C₄H₄O₆)₂^.6H₂O, C6- ZnMg(C₄H₄O₆)₂^.8H₂O