Catalysis Database

Effect of peripheral substitution on spectral and catalytic properties of copper phthalocyanine complexes

Sindhu , Seelan and M.S. , Agashe and D. , Srinivas and S. , Sivasanker (2001) Effect of peripheral substitution on spectral and catalytic properties of copper phthalocyanine complexes. Journal of Molecular Catalysis A: Chemical , 168 . pp. 61-68.

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Abstract

The effect of peripheral substitution on the spectral and catalytic properties of copper phthalocyanine complexes has been investigated. The complexes were characterized by elemental analysis, FT-IR, UV–VIS and electron paramagnetic resonance(EPR) techniques. The EPR spectra of solid samples were broad due to intermolecular spin–spin interactions while the frozen H2SO4 solutions showed well resolved hyperfine and superhyperfine features due to copper and nitrogen nuclei, respectively.The unpaired electron occupies a 3dx2−y2 orbital of copper(II). The ground state molecular orbital coefficients were estimated from the spin Hamiltonian parameters. The activity for epoxidation of styrene was more for complexes with electronegative substituents. The enhanced activity of substituted CuPc complexes has been correlated to the electronic and molecular structure parameters.

Item Type:Article
Subjects:Science > Chemistry
ID Code:124
Deposited By:INVALID USER
Deposited On:28 Feb 2007 13:35
Last Modified:28 Feb 2007 13:35

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