Synthesis, spectroscopic and electrochemical study of nickel(II) complexes with tetradentate asymmetric Schiff bases derived from salicylaldehyde and methyl-2-amino-1-cyclopentenedithiocarboxylate

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Pereira, E (Autor) FCUP; Gomes, L (Autor) Outra; de Castro, B (Autor) FCUP

Revista

Título: Inorganica Chimica Acta

Vol. 271

Páginas: 83-92

ISSN: 0020-1693

Editora: Elsevier

Indexação

ISI Web of Knowledge - 39 Citações

Scopus - 35 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-83S

DOI: 10.1016/s0020-1693(97)05904-5

Abstract (EN): New tetradentate ligands with N(2)OS coordination spheres were prepared and the corresponding nickel(II) complexes were synthesized and characterized by analytical, spectroscopic and electrochemical methods. The structure of nickel{methyl-2-{N-[2-(3'-methoxy-2'-phenolate) methylidynenitrilo]ethyl}aminato(-1)-1-cyclopentenedithiocarboxylate) has been determined by X-ray crystallography. This complex crystallizes in the orthorhombic space group P2(1)2(1)2 with a = 11.417 (3), b = 13.883 (4), c = 12.769 (3), Z=4 and R(1) = 0.0539 for 4641 reflections with I>2 sigma(I). The UV-Vis and (1)H NMR spectroscopic results indicate that the complexes have a square-planar structure in the solid state and in solution. Electrochemical and EPR data show that the complexes ar-reduced to the correspondent nickel(I) complexes, but that the ligands are non-innocent in the electrochemical oxidation of the complexes. (C) 1998 Elsevier Science S.A.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10