Affordable Access

Publisher Website

Synthesis, antimicrobial activity and molecular modeling of cobalt and nickel complexes containing the bulky ligand:bis[N-(2,6-diisopropylphenyl)imino] acenaphthene

Authors
Journal
European Journal of Medicinal Chemistry
0223-5234
Publisher
Elsevier
Publication Date
Volume
40
Issue
12
Identifiers
DOI: 10.1016/j.ejmech.2005.06.009
Keywords
  • Nickel Complexes
  • Bis[N-(2
  • 6-Diisopropylphenyl)Imino] Acenaphthene
  • Pr-Bian
Disciplines
  • Biology
  • Mathematics
  • Physics

Abstract

Abstract Two cobalt and two Nickel complexes of bis[ N-(2,6-diisopropylphenyl)imino]acenaphthene ( Pr-BIAN) ligand, have been synthesized. These complexes, namely [Co(Pr-BIAN)Cl 2] 1, [Co(OAc) 2 (Pr-BIAN) 2](ClO 4) 2, [Ni(Pr-BIAN)(NO 3) 2] 3 and [Ni(Pr-BIAN)2](ClO 4) 2 4, were characterized by elemental analyses, molar conductance, spectral (IR, UV–Visible and NMR) and magnetic moment measurements. In these complexes the geometries about the metal center are significantly different. While for complexes 2 and 3 an octahedral structure is proposed, in complex 4, square-planar coordination with an almost perfect planar arrangement of two Pr-BIAN ligands around the nickel center is suggested. In 1, two imine nitrogen atoms of Pr-BIAN and two chloride atoms are coordinating in a tetrahedral fashion around the cobalt center. Molecular mechanics (MM+) and semiempirical molecular orbital calculations have been performed for the most biologically active complex 1 and its free ligand Pr-BIAN and compared with inactive ligand bis[ N-( p-tolylphenyl)imino]acenaphthene 6, to get insight into their molecular structures and to learn more about their stable molecular conformations.

There are no comments yet on this publication. Be the first to share your thoughts.