Synthesis, Characterization, and Magnetic and Thermal Studies on Some Metal(II) Thiophenyl Schiff Base Complexes

Table 2

Relevant infrared and electronic spectral data of the ligand and its complexes.

Compound	νOH	ν(C=N)  +  ν(C=C)	νPh/C–O	δC–H	ν(M–N)	ν(M–O)	Electronic transitions (kK)
HL	3360b	1614s 1593s 1521s	1461s 1364s	972s	—	—	33.50, 36.25, 40.20
[MnL2]H2O	3500b	1612s 1589s 1551s	1298s 1194s	848s 720s	580m 561s	450m 420s	15.00, 23.11, 30.26, 33.45, 40.20
[CoL2]H2O	3500b	1609s 1557s 1503s	1231m 1180m	840s 777m	575s 537m	475m 415m	10.82, 18.20, 32.0, 37.40, 41.0
[NiL2]1/2H2O	3500b	1599s 1585s 1537s	1233s 1192s	853s 780m	581s 564s	460s 453s	14.29, 20.21, 30.72, 36.25, 40.40
[CuL2]	—	1587s 1538s	1237m 1193m	856s 795s	573s 557s	465s 410s	14.09, 21.60, 30.92, 34.35, 41.20
[ZnL2]	—	1609s 1582s 1504s	1231m 1197m	896s 731m	579s 562m	480m 405m	28.20, 35.00, 42.00
[PdL2]	—	1592s 1540s	1240s 1177s	843m 783m	562m 542m	450m 420m	18.20, 26.32, 30.25, 39.20, 43.00

b:  broad, m:  medium, s:  strong., 1 kK:  1000 cm⁻¹.