Journal of Chemistry

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 3

Optical absorption data of X-Zn^II-t(p-Cl)PP (X = phenolates and pyridinates as axial ligands) in CHCl₃ showing _max together with log ε and _1/2.


	B-bands	Q-bands
Compound	_max, (log ), _1/2	_max, (log ), _1/2
	(nm), (M⁻¹ cm⁻¹), (cm⁻¹)	(nm), (M⁻¹ cm⁻¹), (cm⁻¹)

H₂t(p-Cl)PP	425.5	519, 559, 599.5, 653.2
Zn-t(p-Cl)PP	423	549, 588
phO-Zn-t(p-Cl)PP	418.5, (5.98), 672	548, (4.69), 839
		586, (3.06)
α-Naphthol-Zn-t(p-Cl)PP	416.4, (4.76), 670	545, (4.32), 835
		584, (3.02)
o-OCH₃phO-Zn-t(p-Cl)PP	418, (4.72), 831	548, (4.09), 719
		589, (3.35)
m-OCH₃ph-Zn-t(p-Cl)PP	416, (4.70), 831	548, (4.09), 719
		589, (3.37)
p-OCH₃phO-Zn-t(p-Cl)PP	417, (4.68), 839	549, (4.16), 724
		591, (3.31)
o-CH₃phO-Zn-t(p-Cl)PP	416, (4.92), 682	544, (4.61), 732
		580, (3.01)
m-CH₃phO-Zn-t(p-Cl)PP	416, (4.83), 684	543, (4.54), 729
		583, (3.17)
p-CH₃phO-Zn-t(p-Cl)PP	416, (485), 684	544, (4.61), 732
		581, (3.03)
o-NH₂phO-Zn-t(p-Cl)PP	420, (4.82), 849	549, (4.64)
		591, (3.56)
p-NH₂phO-Zn-t(p-Cl)PP	420, (4.82), 851	546, (4.61)
		589, (3.40)
o-CH₃py-Zn-t(p-Cl)PP	424.3, (4.70), 882	556.3, (4.27), 849
		601.6, (4.16)
m-CH₃py-Zn-t(p-Cl)PP	424.5, (4.89), 889	556.8, (4.31), 846
		602.7, (4.22)
p-CH₃py-Zn-t(p-Cl)PP	424.8, (4.96), 895	557.1, (4.42), 839
		602.9, (4.36)
o-NH₂py-Zn-t(p-Cl)PP	425.3, (4.808), 885	558.1, (4.29), 845
		607.9, (4.17)
m-NH₂py-Zn-t(p-Cl)PP	425.5, (4.825), 889	559.2, (4.29), 851
		609.2, (4.11)
p-NH₂py-Zn-t(p-Cl)PP	425.6, (4.84), 897	559.9, (4.31), 862
		609.6, (4.13)