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Issue 19, 1998
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Template synthesis of square-planar nickel(II) and copper(III) complexes based on hydrazide ligands

Abstract

Ring-closure reactions between anionic complexes of nickel(II) and copper(II) with the hydrazide ligands (2-hydroxyiminopropionohydrazide [CH3C([double bond, length half m-dash]NOH)C(O)NHNH2, H2poh] and oxalodihydrazide [NH2NHC(O)C(O)NHNH2, H2oxh] and formaldehyde have been investigated. The isolated compounds were characterised by means of NMR, IR spectroscopy, cyclic voltammetry and single crystal X-ray analysis. In the case of the copper complex with H2oxh the cyclisation is accompanied by oxidation of the central atom to the +3 state with oxygen in the air. The central atoms in the complexes are square-planar with four nitrogen atoms belonging to the deprotonated hydrazide (Cu) or two hydrazide and two oxime (Ni) groups. The cyclic 1,3,5-oxodiazinane fragment in the complexes adopts a chair conformation which is retained in solution.

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Article type: Paper
DOI: 10.1039/A802451K
Citation: J. Chem. Soc., Dalton Trans., 1998,0, 3269-3274
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    Template synthesis of square-planar nickel(II) and copper(III) complexes based on hydrazide ligands

    I. O. Fritsky, H. Kozłowski, P. J. Sadler, O. P. Yefetova, J. Śwątek-Kozłowska, V. A. Kalibabchuk and T. Głowiak, J. Chem. Soc., Dalton Trans., 1998, 0, 3269
    DOI: 10.1039/A802451K

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