Studies on 2, 6-diacetylpyridine bis(2-furoylhydrazone) complexes of bivalent 3d-metal ions
1987
Summary The chelating behaviour of neutral and deprotonated 2, 6diacetyl-pyridine bis(2-furoylhydrazone), H2dapf , has been investigated in some new complexes of oxovanadium(IV), manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II). The hydrazone reacts with the metal salts to yield complexes of two types; the addition compounds [VO(H2dapf)]SO4, [M(H2dapf)C1]C1 and the deprotonated complexes [M(dapf)H20 ] [M =manganese(II), cobalt(II), nickel(II), copper(II) or zinc(II)] in neutral and alkaline media, respectively. The complexes have been characterized by elemental analyses, molar conductance, magnetic susceptibility, electronic, i.r. and e.s.r, studies and their stereochemistries are discussed.
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