title: New 14-membered octaazamacrocyclic complexes: synthesis, spectral, antibacterial and antifungal studies.
abstract: A novel series of macrocyclic complexes of the type [M(C(18)H(14)N(10)S(2))X]X(2) where M=Cr(III), Fe(III) and Mn(III); X=Cl(-), NO(3)(-) and CH(3)COO(-) have been synthesized by [2+2] condensation of thiocarbohydrazide and isatin in the presence of trivalent metal salts in methanolic medium by template method. The complexes have been characterized with the help of elemental analyses, conductance measurements, magnetic measurements, electronic, NMR, IR and mass spectral studies. On the basis of these studies, a five coordinate square pyramidal geometry for all of these complexes has been proposed. These metal complexes were also tested for their in vitro antimicrobial activities against some bacterial strains viz. Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa and some fungal strains Aspergillus niger, Aspergillus flavus (molds), Candida albicans, Saccharomyces cerevisiae (yeasts).
authors.affiliation: Department of Chemistry, National Institute of Technology, Kurukshetra 136 119, India. dpsinghchem@yahoo.co.in
authors.forename: D P
authors.initials: DP
authors.lastname: Singh
authors.forename: Krishan
authors.initials: K
authors.lastname: Kumar
authors.forename: Chetan
authors.initials: C
authors.lastname: Sharma
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D001372:Aza Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D001419:Bacteria / Q000187:drug effects*; D002857:Chromium / Q000737:chemistry; D005658:Fungi / Q000187:drug effects*; D007501:Iron / Q000737:chemistry; D047028:Macrocyclic Compounds / Q000138:chemical synthesis / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008345:Manganese / Q000737:chemistry; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D001372:Aza Compounds; D047028:Macrocyclic Compounds; D009942:Organometallic Compounds; D002857:Chromium; D008345:Manganese; D007501:Iron