Synthesis and Spectroscopic and Biological Activities of Zn(II) Porphyrin with Oxygen Donors

Table 4

Main vibrational frequencies corresponding to the various groups in X-Zn-t(p-CH₃)PP (X = different phenols as axial ligand).

Porphyrins	𝜈(N–H); (cm^−1)	𝜈(C–H); (cm^−1)	𝜈(C–N); (cm^−1)	𝜈(C=C); (cm^−1)	𝜈(C=N); (cm^−1)	𝜈(CH3); (cm^−1)	𝜈(Zn–Npor); (cm^−1)	𝜈(Zn–O); (cm^−1)	Other assignments
H2t(p-CH3)PP; [(C48H38N4)]	3446	2964	1350	1650	1589	2855	—	—
Zn-t(p-CH3)PP; [(C48H36N4Zn1)]	—	2963	1349	1658	1594	2849	482	—
phO-Zn-t(p-CH3)PP; [(C6H5O)Zn(C48H36N4)]	—	2963	1351	1654	1590	2851	473	519
p-OCH3phO-Zn-t(p-CH3)PP; [(C7H7O2)Zn(C48H36N4)]	—	2964	1350	1649	1586	2859	481	526
p-NH2phO-Zn-t(p-CH3)PP; [(C6H6NO)Zn(C48H36N4)]	—	2963	1351	1646	1583	2856	464	521
p-NO2phO-Zn-t(p-CH3)PP; [(C6H4NO3)Zn(C48H36N4)]	—	2963	1350	1658	1592	2851	483	518
2,4-Cl2phO-Zn-t(p-CH3)PP; [(C6H3Cl2O)Zn(C48H36N4)]	—	2963	1349	1659	1594	2846	476	517
p-CH3-phO-Zn-t(p-CH3)PP; [(C7H7O)Zn(C48H36N4)]	—	2951	1346	1642	1580	2862	468	519