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 4

Optical absorption data of X-Zn^II-t(p-Cl)PP (X = phenolates and pyridinates as axial ligands) in different solvents at different concentration.


		B band at different concentration			Q band at different concentration
Compound	Solvent	λ _max (nm), _1/2 (cm⁻¹)			λ _max (nm), Δ_1/2 (cm⁻¹)			Oscillator strength (f) = 4.33 × 10⁻⁹εΔ_1/2
Compound	Solvent	(Abs.), ε (M⁻¹ cm⁻¹)			(Abs.), ε (M⁻¹ cm⁻¹)			B-band			Q-band
		10⁻³	10⁻⁴	10⁻⁵	10⁻³	10⁻⁴	10⁻⁵	10⁻³	10⁻⁴	10⁻⁵	10⁻³	10⁻⁴	10⁻⁵

4-NH₂PhO- Zn-t(P-Cl)PP	MtOH				558, 650	556, 744	563, 460	0.1383989	0.1836092	0.0000336	0.2402569	0.1101212	0.00000475
		425, 698	425, 698	424, 909	(0.999),85364	(0.400),34183	(0.279), 2.38579
		(0.536), 45792	(0.709, 60572)	(0.999), 8.5427	596	584	584
					(0.697)	(0.158)	(0.421)
	CH₂Cl₂				552, 541	552, 814	552, 814	0.07676	0.127993	0.0000258	0.1999677	0.2283108	0.0000229
		423, 861	422, 865	422, 881	(0.999), 85364	(0.758), 64776	(0.762), 6.5160
		(0.241), 20589	(0.400), 34173	(0.791), 6.76404	589	580	578
					(0.891)	(0.400)	(0.419)
	CHCl₃				540, 597	542, 845	540, 565	0.0963475	0.1845981	0.0000242	0.1327532	0.2998537	0.00000922
		420, 874	419, 931	419, 931	(0.601), 51355	(0.959), 81953	(0.441), 3.7711
		(0.298), 25459	(0.536), 45792	(0.702), 6.00298	574	570	568
					(1.054)	(0.839)	(0.249)
	C₆H₆				540, 565	543, 559	543, 559	0.197221	0.245405	0.0000299	0.1753933	0.1145923	0.0000133
		416, 890	414, 844	414, 844	(0.839), 71693	(0.554), 47343	(0.641), 5.4814
		(0.599), 51177	(0.786), 67151	(0.959), 8.20065	563	569	567
					(0.702)	(0.298)	(0.536)

2,4-Cl₂PhO- Zn-t(P-Cl)PP	MtOH				551, 574	546, 710	543, 717	0.1774863	0.21244137	0.0000255	0.1774863	0.2848923	0.0000263
		435, 1010	432, 1025	432, 1073	(0.746), 71411	(0.968), 92669	(0.886), 8.4819
		(0.383), 38157	(0.500), 47866	(0.573), 5.48549	574	574	571
					(0.008)	(0.624)	(0.446)
	CH₂Cl₂				547, 707	546, 710	546, 679	0.1832619	0.3502192	0.0000439	0.2927500	0.2848923	0.0000244
		433, 1068	431, 979	431, 1078	(0.999), 95629	(0.968), 92669	(0.868), 8.3096
		(0.414), 39629	(0.863), 82617	(0.983), 9.41054	576	573	572
					(0.729)	(0.564)	(0.446)
	CHCl₃				543, 591	542, 561	542, 529	0.1423922	0.24982909	0.0000340	0.1425687	0.1009255	0.0000142
		432, 926	431, 1025	431, 1029	(0.582), 55712	(0.434), 41548	(0.649), 6.2131
		(0.371), 35513	(0.588), 56290	(0.798), 7.63948	576	568	565
					(0.386)	(0.221)	(0.430)
	C₆H₆				540, 565	538, 602	536.8, 578	0.2273518	0.2209389	0.0000307	0.1269292	0.1993860	0.0000175
		429, 1138	429.4, 1066	429.2, 1077	(0.542), 51883	(0.799), 76491	(0.732), 7.0076
		(0.482), 46139	(0.500), 47866	(0.689), 6.59599	563	567	563
					(0.466)	(0.443)	(0.448)

2-NH₂Py- Zn-t(P-Cl)PP	MtOH				585, 483	582, 516	580.4, 646	0.1113925	0.3154932	0.0000381	0.0614764	0.1220899	0.00000706
		429, 1088	427, 1098	426, 1153	(0.347), 29395	(0.645), 54644	(0.498), 2.5256
		(0.279), 23645	(0.783), 66359	(0.901), 7.63602	611	609.4	605
					(0.295)	(0.412)	(0.258)
	CH₂Cl₂				552, 541	551.7, 520	550, 545	0.41866151	0.3723076	0.0000387	0.0797725	0.1196027	0.0000148
		428, 1142	427, 1098	427, 1098	(0.402), 34054	(0.627), 53119	(0.743), 6.2969
		(0.999), 84666	(0.924), 78309	(0.961), 8.14451	579	576	574
					(0.378)	(0.494)	(0.496)
	CHCl₃				548, 674	547.2, 575	547, 582	0.2394886	0.4114004	0.0000318	0.1238606	0.1056749	0.00000955
		425, 1108	423, 1169	422, 1123	(0.501), 42441	(0.501), 42444	(0.447), 3.7883
		(0.589), 49918	(0.959), 81276	(0.772), 6.54273	577	575	574
					(0.324)	(0.349)	(0.248)
	C₆H₆				542, 593	541, 595	539, 404	0.3079444	0.1869391	0.0000256	0.1439939	0.1006193	0.00001021
		420, 1134	421, 1025	420, 1185	(0.662), 56079	(0.461), 39055	(0.689), 5.8393
		(0.740), 62715	(0.497), 42120	(0.589), 4.99180	576	578	575
					(0.472)	(0.362)	(0.532)