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Magnetic and spectroscopic investigations of tetra(4-t-butyl)phthalocyano complexes of cobalt(II) and­copper(II)

✍ Scribed by Reimar Heucher; G. V. R. Chanramouli; Periakaruppan T. Manoharan

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
114 KB
Volume
02
Category
Article
ISSN
1088-4246

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✦ Synopsis

The tetra(4-t-butyl)phthalocyanine derivatives of Co and Cu have been studied by ESR spectroscopy in solution owing to their solubility in polar and non-polar solvents. The cobalt complex gives a well-resolved EPR spectrum in toluene glass at 77 K with g k = 2.018, g c = 2.785, A k = 0.0155 cm À1 , A c = 0.0208 cm À1 , P = 0.0201 cm À1 and K = 0.0079 cm À1 . Although the low-field lines due to A c seem a lot more broadened than the high-field ones due to A k , both sets have been shown to have highly M I -dependent linewidths. The experimental data for g and A available in the literature have been plotted and compared with McGarvey's theoretical equations. The copper complex in toluene glass at 110 K gives a well-resolved EPR spectrum at Q-band frequency with g k = 2.163, g c = 2.048, A k = 0.0212 cm À1 and A c = 0.0032 cm À1 .

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