Synthesis and Structural Studies on 1,8,15,22 – Tetrahydroxy Phthalocyanines of Co(II), Ni(II), Cu(II) and Zn(II)

M. P. Somashekarappa; J. Keshavayya

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Synthesis and Structural Studies on 1,8,15,22 – Tetrahydroxy Phthalocyanines of Co(II), Ni(II), Cu(II) and Zn(II)

M. P. Somashekarappa and J. Keshavayya

Department of Industrial Chemistry, Kuvempu University, Jnana Sahyadri, Shankaraghatta, Shimoga District - 57V 451 India.

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ABSTRACT:

Metal (II) 1,8,15,22-tetrahydroxy phthalocyanines. (MPTOHs) of cobalt (CoPTOH), nickel (NiPTOH), copper (CuPTOH) and zinc (ZnPTOH) were prepared from the corresponding amine derivatives.These complexes were characterized by elemental analyses, electronic spectra, IR spectra, magnetic susceptibility measurements, thermogravimetric and x-ray diffraction studies to evaluate their purity, structural integrity thermal stability and crystallinity. The effect of substftuents on the electronic spectra and the orbital contribution to the magnetic moments over a range of field strength are discussed.

KEYWORDS:

Tetrahydroxy; phthalocyanines; substftuents crystallinity