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Metal promoted hydrolysis of methyl 2-(N-acetylhydrazono)propanoate and crystal structure of the derived Ni(II) complex by Paolo Domiano; Pier Luigi Messori; Corrado Pelizzi; Giovanni Predieri is a Chemistry article available to read on EtoBox.

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## The new chelating ligand C&C(O)NHN=C(CH,)-C(0)OCHr,,L, obtained by condensation of Nucetylhydrazine and methyl pyruvate, undergoes quantitative hydrolysis of the -C(O)OCHz group by reacting, in hydro-alcoholic medium, with some first row transition metal acetates. Complexes of the type ML; have been obtained and characterized, where L' is the derived N-acetylhydrazonopropanoate anion. An X-ray structural analysis carried out on the NiL;.2Hz0 complex has shown a terdentate behaviour of the anionic ligand, resulting in a distorted octahedral environment around the metal. Coordination occurs through the acetyl (Ni-0 = 2.094(5) A), the iminic (Ni-N = 1.995(5) A) and the carboxylic (Ni -0 =2.05.5(S) a) donorgroups. Crystals areorthorhombic, space group Pbcn with unit cell dimensions a = 12.151(3), b = 9.677(2), c = 13.489(3) 8, and Z = 4. The structure was solved by direct methods to R = 0.0495 for 694 observed reflections. ---\*Bis{2-(N-acetylhydrazono)propanoato4N'O'}nickel(II) dihydrate.

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Author

Paolo Domiano; Pier Luigi Messori; Corrado Pelizzi; Giovanni Predieri

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)

Published

1983

Language

EN

Field

Chemistry (Physical Sciences)