Research Article
Synthesis, Crystal Structures, and Antimicrobial and Antitumor Studies of Two Zinc(II) Complexes with Pyridine Thiazole Derivatives
Table 2
Infrared absorption peaks of the main functional groups on ligands L1 and L2 and complexes 1–3.
| | | L1 | L2 | 1 | 2 |
| | Stretching vibration peak (N-H) | 3139.99 cm−1 | 3200.00 cm−1 | 3216.90 cm−1 | 3245.21 cm−1 | | Skeleton vibration peak (pyridine) | 1353.43, 1588.44, 1514.39, 1475.46 cm−1 | 1462.66, 1499.00, 1599.83, 1636.84 cm−1 | 1592.50, 1376.73 cm−1 | 1567.21, 1593.25, 1500.00, 1449.70 cm−1 | | Skeleton vibration peak (Thiazole) | 1570.92, 1435.06, 1422.61 cm−1 | 1561.72, 1407.26, 1375.20 cm−1 | 1470.91, 1432.01, 1311.65 cm−1 | 1410.93, 1370.81, 1306.35 cm−1 | | Stretching vibration peak (C-H on pyridine) | 3053.18 cm−1 | 3079.41 cm−1 | 3071.80 cm−1 | 3096.59 cm−1 | | Stretching vibration peak (C=N on ring) | 1303.55, 1275.00 cm−1 | 1212.35 cm−1 | 1284.21 cm−1 | 1288.54, 1246.09 cm−1 | | In-plane oscillations peak (C-H on pyridine and thiazole ring) | 1100–400 cm−1 | 1100–400 cm−1 | 1000–400 cm−1 | 1100–600 cm−1 |
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