Bioinorganic Chemistry and Applications / 2009 / Article / Tab 1 / Research Article
Synthesis and Characterization of New Schiff Bases Derived from N (1)-Substituted Isatin with Dithiooxamide and Their Co(II), Ni(II), Cu(II), Pd(II), and Pt(IV) Complexes Table 1 FTIR vibrations for the ligands and their metal complexes.
(a) Symbol
Thioamide
Band I Band II Band III Band IV
3400 3298 1710 1650 1540 1465 1170 881 — — —
3344 3295 1718 1631 1545 1460 1162 877 559 389 277* Co(II)
3350 3295 1718 1631 1545 1460 1165 877 559 389 277* Co(II) C2 3402 3227 1706 1631 1540 1396 1165 880 — 335 320 Ni(II) C3 3347 3260 1716 1627 1520 1450 1150 780 408 350 339 Cu(II) C4 3395 3250 1720 1630 1573 1458 1170 889 586 350 331 Pd(II) C5 3400 3295 1715 1666 1510 1483 1134 850 — 340 300 Pt(IV)
Lattice butanol, C2 , C3 = 3500, 3750 cm-1 , Lattice ethanol, C5 = 3495 cm-1 Coord
H2 O, C3 = 3456, 750, 675; Lattice H2 O, C5 = 3425 cm-1
M-S , C3 and C5 = 345 and 370 cm-1 respectively, *bridging. (b) Symbol
Thioamide
Lattice
Band I Band II Band III Band IV
— — 1604 1554 1461 1170 848 — — — —
3255 1724 1612 1555 1446 1165 868 3417 547 466 273 Co(II) 3160 401
3250 1720 1612 1560 1450 1180 864 3450 493 450 230 Co(II) 3155 385 C7 3450 1750 1620 1550 1448 1150 870 — 520 400 316 Ni(II) 3348 C8 3224 1751 1589 1548 1448 1188 817 3450 560 478 — Cu(II) 3132 385 C9 3147 1720 1612 1550 1465 1180 856 — 500 400 — Pd(II) 3047 380 C10 3294 1720 1612 1548 1472 1170 850 – 500 400 330 Pt(IV) 3147 370
OH, LII = 3400 cm-1 ;
NH , LII = 3145 cm-1 ; Lattice butanol, C6b = 3550 cm-1
M-S , C8 = 320 cm-1 . (c) Symbol
amide
amide
lactam
lactam
Thioamide group
Band I Band II Band III Band IV
3394 1635 3247 1674 1600 1535 1465 1103 880 — — —
3410 1625 3247 1674 1587 1535 1450 1095 830 590 480 320 Co(II)
3410 1620 3247 1674 1580 1535 1450 1100 840 600 480 300 Co(II) C12 3456 1625 3250 1670 1589 1535 1450 1100 860 580 450 308 Ni(II) C13 3386 1620 3250 1666 1600 1535 1473 1095 850 617 401 310 Pd(II)
Lattic
,
,
3500
