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Evaluation of dipolar shifts and paramagnetic anisotropy in penta coordinated cobalt(II) complexes

✍ Scribed by M.M. Dhingra; M.D. Zingde; R.N. Mukherjee

Publisher: Elsevier Science
Year: 1975
Tongue: English
Weight: 364 KB
Volume: 35
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(75)85663-6

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✦ Synopsis

The isotropic proton shifts for the pyridine N-oxide and ypicoline N-oxide protons have been observed in the pcnta coordinated adducts of these bases with bis[diCn-tolyl)dithioplrosphinato] cobalt[II). The con~bution to the observed shifts due to dipolar interaction has been calculated. Prom the dipolar shifts, it ~3s ascertained that the pyridine N-oside complexes have a bent structure in solution with a Co.-O-N angle of 12.5". An estimate of the pvamagnetic anisotropy of the cobalt complex yields Kii--ir, = 4244 X lo-' cm3/mole.

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