Research Article
Synthesis and Spectroscopic Studies of Axially Ligated Zn(II)5,10,15,20-meso-tetra(p-chlorophenyl)porphyrin with Oxygen and Nitrogen Donors
Table 1
Main Infrared absorption frequencies corresponding to various groups in [X-ZnII-t(p-Cl)PP] [X = phenolates and pyridinates].
| | Entry | Compound | (N–H) | (C–H) | (C–N) | (C=C) | (C–O) | (C=N) | (C–Cl) | (Zn–NPor) | (Zn–NPy) | (Zn–O) | Other assignments | | (cm−1) | (cm−1) | (cm−1) | (cm−s1) | (cm−1) | (cm−1) | (cm−1) | (cm−1) | (cm−1) | (cm−1) |
| | 1 | H2t(p-Cl)PP | 3499 | 2966 | 1340 | 1591 | — | 2342 | 798.7 | — | — | — | | | 2 | Zn-t(p-Cl)PP | — | 2966.2 | 1341.1 | 1589.6 | 1207.5 | 2347 | 798.3 | 470 | — | — | | | 3 | phO-Zn-t(p-Cl)PP | — | 2960.4 | 1350.3 | 1584.1 | 1206.5 | 2339.3 | 798.9 | 474 | — | 500.7 | | | 4 | p-OCH3phO-Zn-t(p-Cl)PP | — | 2962.7 | 1337.7 | 1590 | 1207.2 | 2342 | 800.1 | 489 | — | 496.2 | ν(C–H) = 2851.1 | | ν(C–O–C)sym = 1020.2 | | ν(C–O–C)asym = 1261.3 | | 5 | p-NH2 phO-Zn-t(p-Cl)PP | — | 2964.1 | 1351.6 | 1589.2 | 1205 | 2360 | 799.3 | 482 | — | 496.3 | ν(NH2)sym = 3298 | | ν(NH2)asym = 3371 | | 6 | p-NO2 phO-Zn-t(p-Cl)PP | — | 2963 | 1351.4 | 1590 | 1207.3 | 2360 | 798.7 | 471 | — | 496.3 | ν(NO2)sym = 1345 | | ν(NO2)asym = 1520 | | 7 | p-CH3py-Zn-t(p-Cl)PP | — | 2964 | 1095 | 1640 | — | 2350 | 799.5 | 492 | 617 | — | ν(CH3) = 2920 | | 8 | p-NH2py-Zn-t(p-Cl)PP | — | 2965 | 1094 | 1652 | — | 2354 | 798.6 | 495 | 618 | — | ν(NH2)sym = 3280 | | ν(NH2)asym = 3450 | | 9 | p-CNpy-Zn-t(p-Cl)PP | — | 2964.0 | 1096.1 | 1636.7 | — | 2358 | 796 | 490 | 617.4 | — | ν(CN) = 2280 |
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