Synthesis, characterization and antimicrobial activity of five metal complexes of N-acetyl-9-hydroxyl-fluorene-9-hydrazide
Titel:
Synthesis, characterization and antimicrobial activity of five metal complexes of N-acetyl-9-hydroxyl-fluorene-9-hydrazide
Auteur:
Xiao, Fengping Dai, Xuya Jin, Longfei
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 61 (2008) nr. 15 pagina's 2402-2412
Jaar:
2008
Inhoud:
Five mononuclear metal (Mn, Co, Ni, Cu, Zn) complexes have been prepared using a monoanionic tridentate ligand N-acetyl-9-hydroxyl-fluorene-9-hydrazidate (ahfhz-) and characterized by elemental analysis, ESI-MS, IR, UV, 1H NMR and 13C NMR. Antibacterial screening data showed that the cobalt and copper complexes and Hahfhz have moderate antimicrobial activity. The five metal complexes have some antagonistic effect against the ligand to Gram+ bacteria Staphylococcus aureus and Bacillus subtilis. The decrease in the efficiency of metal complexes may be assigned to the zero charge of the central core. [Co(ahfhz)2] · 2CH3OH (3) crystallizes in monoclinic system with space group P21/n, a = 13.1379(7) Å, b = 17.7809(10) Å, c = 14.7403(8) Å, β = 110.0580(10)°; in the crystal structure packing N-H ··· O, O-H ··· O and C-H ··· π hydrogen bonding interactions lead to a supramolecular structure.