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New metal chelates of 4-phenyl-1-(p-nitrobenzoyl)-3-thio-semicarbazide (HPNTS) with some transition metal ions have been synthesized and characterized by spectral (UV, visible, IR, 1HNMR), magnetic and thermal (DSC) measurements. The infrared spectral data show that HPNTS behaves as a mononegative bidentate ligand. The stereochemistry of the Co(II), Ni(II) and Cu(II) chelates has been discussed with the help of magnetic and spectral studies. The formation of the complexes in solution is investigated conductome-trically and spectrophotometrically.
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Ahmed A. El‐Asmy (1987) studied this question.
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