International Journal of Inorganic Chemistry

Research Article

Synthesis, Characterization, and Photophysical Studies of Some Novel Ruthenium(II) Polypyridine Complexes Derived from Benzothiazolyl hydrazones

Table 2

IR and ¹H NMR spectral data of ligands and their complexes.


CC	IR (KBr, Cm⁻¹), ν	¹H NMR (CDCl₃, 500 MHz, ppm),

3a	3400 (OH), 3195 (N–H), 1596 (C=N), 1590 (C=N, cyclic), 1510 (N–N), 1450 (C–O), 1280 (C–N), 860 (C–S)	2.49 (s, 3H, CH₃), 7.00 (s, 1H, NH), 7.21 (m, 2H, ArH), 7.45 (m, 4H, ArH), 13.94 (s, 1H, br, OH)

3b	3352 (OH), 3174 (N–H), 1598 (C=N), 1552 (C=N, cyclic), 1512 (N–N), 1467 (C–O), 1274 (C–N), 863 (C–S)	2.45 (s, 3H, CH₃), 7.00 (s, 1H, NH), 7.19 (m, 3H, ArH), 7.37 (s, 4H, ArH), 12.60 (s, 2H, br, two OH)

3c	3350 (OH), 3198 (N–H), 1590 (C=N), 1588 (C=N, cyclic), 1510 (N–N), 1452 (C–O), 1280 (C–N), 860 (C–S)	2.40 (s, 3H, CH₃), 6.90 (s, 1H, NH), 7.10 (m, 3H, ArH), 7.21 (m, 4H, ArH), 12.01 (s, 2H, br, two OH)

3d	3400 (OH), 3204 (N–H), 1595 (C=N), 1585 (C=N, cyclic), 1500 (N–N), 1465 (C–O), 1280 (C–N), 860 (C–S)	2.45 (s, 3H, CH₃), 7.00 (s, 1H, NH), 7.19 (m, 3H, ArH), 7.37 (s, 4H, ArH), 12.60 (s, 1H, br, OH)

3e	3400 (OH), 3190 (N–H), 1600 (C=N), 1590 (C=N, cyclic), 1510 (N–N), 1456 (C–O), 1280 (C–N), 860 (C–S)	2.41 (d, 6H, two CH₃), 6.90 (s, 1H, NH), 7.30 (m, 7H, ArH), 12.30 (s, 1H, br, OH)

4a	3198 (N–H), 1598 (C=N, cyclic), 1404 (C=N), 1502 (N–N), 1430 (C–O), 1282 (C–N), 858 (C–S), 745 (bpy ring), 651 (H₂O), 495 (Ru–N), 418 (Ru–O)	2.41 (s, 3H, CH₃), 6.81 (s, 1H, NH), 7.05 (m, 3H, ArH), 7.41 (m, 4H, ArH), 7.58 (m, 8H, bpy protons), 7.81 (m, 8H, bpy, protons)

4b	3380 (OH), 3200 (N–H), 1594 (C=N, cyclic), 1450 (C=N), 1504 (N–N), 1438 (C–O), 1280 (C–N), 860 (C–S), 740 (bpy ring), 650 (H₂O), 498 (Ru–N), 450 (Ru–O)	2.41 (s, 3H, CH₃), 6.93 (s, 1H, NH), 7.10 (m, 3H, ArH), 7.34 (m, 4H, ArH), 7.58 (m, 8H, bpy protons), 7.81 (m, 8H, bpy protons), 13.92 (s, 1H, br, OH)

4c	3363 (OH), 3194 (N–H), 1593 (C=N, cyclic), 1468 (C=N), 1505 (N–N), 1422 (C–O), 1280 (C–N), 860 (C–S), 736 (bpy ring), 650 (H₂O), 495 (Ru–N), 418 (Ru–O)	2.39 (s, 3H, CH₃), 6.92 (s, 1H, NH), 7.10 (m, 3H, ArH), 7.33 (m, 4H, ArH), 7.58 (m, 8H, bpy protons), 7.81 (m, 8H, bpy protons), 13.94 (s, 1H, br, OH)

4d	3208 (N–H), 1602 (C=N, cyclic), 1466 (C=N), 1508 (N–N), 1415 (C–O), 1285 (C–N), 856 (C–S), 768 (bpy ring), 651 (H₂O), 520 (Ru–N), 445 (Ru–O)	2.41 (s, 3H, CH₃), 6.93 (s, 1H, NH), 7.21 (m, 3H, ArH), 7.43 (m, 4H, ArH), 7.58 (m, 8H, bpy protons), 7.81 (m, 8H, bpy protons)

5a	3196 (N–H), 1602 (C=N, cyclic), 1465 (C=N), 1502 (N–N), 1413 (C–O), 1282 (C–N), 1056 (phen ring), 650 (H₂O), 510 (Ru–N), 438 (Ru–O)	2.43 (s, 3H, CH₃), 6.87 (s, 1H, NH) 7.11 (m, 3H, ArH), 7.41 (m, 4H, ArH), 7.58 (m, 8H, phen protons), 7.80 (m, 8H, phen protons)

5d	3205 (N–H), 1602 (C=N, cyclic), 1564 (C=N), 1503 (N–N), 1428 (C–O), 1278 (C–N), 862 (C–S), 1056 (phen ring), 651 (H₂O), 515 (Ru–N), 419 (Ru–O)	2.41 (s, 3H, CH₃), 6.89 (s, 1H, NH), 7.11 (m, 3H, ArH), 7.41 (m, 4H, ArH), 7.55 (m, 8H, phen protons), 7.80 (m, 8H, phen protons)

5e	3208 (N–H), 1594 (C=N, cyclic), 1465 (C=N), 1500 (N–N), 1423 (C–O), 1289 (C–N), 858 (C–S), 1105 (phen ring), 650 (H₂O), 511 (Ru–N), 423 (Ru–O)	2.31 (s, 3H, CH₃), 2.46 (s, 3H, CH₃), 7.03 (s, 1H, NH), 7.14 (m, 2H, ArH), 7.17 (s, 4H, ArH), 7.58 (m, 8H, phen protons), 7.80 (m, 8H, phen protons), 12.67 (s, 1H, br, OH)

CC: compound code.