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Z. Naturforsch. 2012,
67b, 1178 – 1184
doi:10.5560/ZNB.2012-0141
Synthesis, Characterization, Fluorescence and Antibacterial Activity of the Re(VII) Complex [ReO3(phen)(H2PO4)]·H2O
1 Laboratoire de Chimie des Matériaux, Faculté des Sciences, 7021 Zarzouna, Bizerte, Tunisie
2 Equipe Environnement et Microbiologie, IPREM UMR 5254, IBEAS, Université de Pau et des Pays de l'Adour, Pau Cedex, France
3 Laboratoire de Bactériologie – Pathologie, Institut National des Sciences et Technologies de la Mer (INSTM), Salammbô, Tunisia
4 Petrochemical Research Chair, College of Science, King Saud University, Riyadh, Saudi Arabia
Reprint requests to M. Rzaigui. E-mail:
mohamed.rzaigui@fsb.rnu.tn
Received May 18, 2012 / published online November 12, 2012
Single crystals of a Re(VII) complex, the dihydrogenophosphato phenanthroline trioxo-rhenium monohydrate of formula [ReO3(phen)(H2PO4)]·H2O (phen = 1,10-phenanthroline), were prepared in aqueous solution. X-Ray analysis shows that it crystallizes in the monoclinic space group P21/c with the unit cell parameters: a = 8.611(2), b = 13.881(2), c = 14.502(4) Å, β = 120.87(2)○, V = 1487.9(6) Å3 and Z = 4. In the neutral complex, the rhenium is in the oxidation state +VII, coordinated by two nitrogen atoms of the bidentate phen, three terminal oxygen atoms and, for the first time, one oxygen atom of the mono-deprotonated phosphoric acid ligand H2PO4−, forming a square-based bipyramidal coordination geometry. The thermal stability, IR, UV/Vis and fluorescence spectroscopic properties are given. The complex shows antimicrobial activity against five different microbes.
Key words: Crystal Structure, Phenanthroline, Rhenium(VII) Complexes, X-Ray Diffraction, Antibacterial Activity