Published in

Elsevier, Journal of Organometallic Chemistry, (760), p. 167-176

DOI: 10.1016/j.jorganchem.2013.10.053

Links

Tools

Export citation

Search in Google Scholar

Further iminopyrrolyl complexes of nickel, cobalt, iron and copper: Synthesis and structural characterisation

Journal article published in 2014 by Clara S. B. Gomes, M. Teresa Duarte, M. Teresa Duarte ORCID, Pedro T. Gomes ORCID
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Red circle
Postprint: archiving forbidden
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

The reaction between two equivalents of 2-(N-arylformimino)pyrrolyl sodium salts (NaNC4H3C(H) = N-Ar), with Ar = C6H5 (I), 2,6-iPr(2)-C6H3 (II) or 2-(N-arylformimino)phenanthro[9,10-c]pyrrolyl sodium salts (NaNC16H10C(H)=N-Ar), with ArC6H5 (III), 2,6-iPr(2)-C6H3 (IV) and one equivalent of nickel(II), cobalt(II), iron(II) and copper(I) halides, in THF, at low temperatures, afforded bis(iminopyrrolyl) or bis(iminophenanthro[9,10-c]pyrrolyl) complexes with different geometries around the metal centres. Nickel(II) derivatives displayed distorted square planar geometries, whereas for cobalt a tetrahedral complex is proposed. The reactions with FeCl2 resulted in very unstable products, giving rise to dimers with pentacoordinated Fe(III) centres. The addition of two equivalents of pyridine to the reaction medium improved the stability of the resulting compound, enabling the formation of a 16-electron Fe(II) complex, which contained simultaneously two iminopyrrolyls and also a pyridine ligand. In the reaction of CuBr with 2-(N-2,6-diisopropylphenylformimino)pyrrolyl sodium salt, a complex with the general formulation [Cu(iminopyrrolyl)](x) was obtained. When exposed to the air, this complex gives rise to the corresponding bis(iminopyrrolyl) Cu(II) complex.