Structural and spectral studies of copper(II) and nickel(II) complexes of pyruvaldehyde mixed bis{N(4)-substituted thiosemicarbazones}

Citation
Lj. Ackerman et al., Structural and spectral studies of copper(II) and nickel(II) complexes of pyruvaldehyde mixed bis{N(4)-substituted thiosemicarbazones}, POLYHEDRON, 18(21), 1999, pp. 2759-2767
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
POLYHEDRON
ISSN journal
0277-5387 → ACNP
Volume
18
Issue
21
Year of publication
1999
Pages
2759 - 2767
Database
ISI
SICI code
0277-5387(1999)18:21<2759:SASSOC>2.0.ZU;2-3
Abstract
Pyruvaldehyde mixed bis(thiosemicarbazones) have been prepared in which the two thiosemicarbazone moieties have different N(4)-substituents. The mixed bis(thiosemicarbazones) and their copper(II) and nickel(II) complexes have been characterized with IR, electronic, mass, LH NMR (Ni) and EPR (Cu) spe ctra. Representative crystal structures have been solved of nickel(II) comp lexes with either a pyruvaldehyde mixed bis(thiosemicarbazone) or a bis(thi osemicarbazone) with identical N(4)-substituents acting as a tetradentate l igand, [Ni(Pu4M4DE)] has an N(4)-methylthiosemicarbazone substituent on the keto ''arm'' and N(4)-diethylthiosemicarbazone substituent on the aldehyde arm. [Ni(Pu4M)] contains two N(4)-methylthiosemicarbazone moieties. Both b is(thiosemicarbazones) form square-planar N2S2 complexes with nickel(II) an d copper(II). (C) 1999 Elsevier Science Ltd. All rights reserved.