Metal Complexes and Metal Promoted Reactions of Cyanoacetylhydrazine (CAH)

Autor:	Mohsen M. Mostafa, M. S. Soliman, A. M. Shallaby, R. M. El-shazely
Rok vydání:	1988
Předmět:	Magnetic measurements Aqueous solution Inorganic chemistry Malonic acid Triple bond Chloride Inorganic Chemistry Metal chemistry.chemical_compound chemistry Bromide visual_art visual_art.visual_art_medium medicine Physical and Theoretical Chemistry Nuclear chemistry medicine.drug
Zdroj:	Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 18:807-821
ISSN:	1532-2440 0094-5714
DOI:	10.1080/00945718808060823
Popis:	Reactions of cyanoacetylhydrazine (CAH = H2L) with Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and U(VI)O2 in ethanolic solution give three types of complexes with the general formulae, [M(H2L)2X2] S(M = Co(II), Ni(II) or Cd(II); X = Cl− or Ac−; S=EtOH or (H2O), [M(HL)2]S(M = Co(II), Cu(II), Zn(II) or U(VI)O2 and S = H2O and [Hg(HL)Cl.H2O]. On the other hand, the reaction of Fe(III) chloride, Cu(II) chloride or bromide with CAH in aqueous ethanolic solution is accompanied by the reduction to Fe(II) and Cu(I) giving complexes with the formulae [Fe(H2L)2(H2O)2]Cl2 (H2L = CAH) and [Cu(H2L−)X] (H2L− = malonic acid amido-hydrazide, X = Cl− or Br−), respectively. The reduction process followed by the addition of H2O to the triple bond (C−=N), forming malonic acid amido-hydrazid, is only observed in case of Cu(I) complexes. Characterization of the isolated solid complexes have been made on the basis of elemental analyses, spectral (u.v., visible, i.r., n.m.r.) and magnetic measurements.
Databáze:	OpenAIRE
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