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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2005-11-18
pubmed:abstractText
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)Cl2] 1, [Co(OAc)2 (Pr-BIAN)2](ClO4) 2, [Ni(Pr-BIAN)(NO3)2] 3 and [Ni(Pr-BIAN)2](ClO4)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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0223-5234
pubmed:author
pubmed:issnType
Print
pubmed:volume
40
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1214-21
pubmed:meshHeading
pubmed-meshheading:16126307-Acenaphthenes, pubmed-meshheading:16126307-Anti-Infective Agents, pubmed-meshheading:16126307-Candida albicans, pubmed-meshheading:16126307-Cobalt, pubmed-meshheading:16126307-Crystallography, X-Ray, pubmed-meshheading:16126307-Drug Design, pubmed-meshheading:16126307-Escherichia coli, pubmed-meshheading:16126307-Ligands, pubmed-meshheading:16126307-Microbial Sensitivity Tests, pubmed-meshheading:16126307-Models, Molecular, pubmed-meshheading:16126307-Molecular Structure, pubmed-meshheading:16126307-Nickel, pubmed-meshheading:16126307-Organometallic Compounds, pubmed-meshheading:16126307-Spectrophotometry, Infrared, pubmed-meshheading:16126307-Spectrum Analysis, pubmed-meshheading:16126307-Staphylococcus aureus, pubmed-meshheading:16126307-Structure-Activity Relationship
pubmed:year
2005
pubmed:articleTitle
Synthesis, antimicrobial activity and molecular modeling of cobalt and nickel complexes containing the bulky ligand: bis[N-(2,6-diisopropylphenyl)imino] acenaphthene.
pubmed:affiliation
Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt. usama@mans.edu.eg
pubmed:publicationType
Journal Article