D. Al-Sabti, M., A. H. Al-Amiery, A., R. Marzoog, T., K. Al-Majedy, Y. (2010). Synthesis and Antibacterial Studies of Novel Phosphorus Ligand 5-(2-diphenylphosphino) phenyl-1,2-dihydro-1,2,4-triazole-3-thione and its Metal Complexes with some Transition Metals. , 4(2), 37-45.
Matheel D. Al-Sabti; Ahmed A. H. Al-Amiery; Thorria R. Marzoog; Yasmien K. Al-Majedy. "Synthesis and Antibacterial Studies of Novel Phosphorus Ligand 5-(2-diphenylphosphino) phenyl-1,2-dihydro-1,2,4-triazole-3-thione and its Metal Complexes with some Transition Metals". , 4, 2, 2010, 37-45.
D. Al-Sabti, M., A. H. Al-Amiery, A., R. Marzoog, T., K. Al-Majedy, Y. (2010). 'Synthesis and Antibacterial Studies of Novel Phosphorus Ligand 5-(2-diphenylphosphino) phenyl-1,2-dihydro-1,2,4-triazole-3-thione and its Metal Complexes with some Transition Metals', , 4(2), pp. 37-45.
D. Al-Sabti, M., A. H. Al-Amiery, A., R. Marzoog, T., K. Al-Majedy, Y. Synthesis and Antibacterial Studies of Novel Phosphorus Ligand 5-(2-diphenylphosphino) phenyl-1,2-dihydro-1,2,4-triazole-3-thione and its Metal Complexes with some Transition Metals. , 2010; 4(2): 37-45.

Synthesis and Antibacterial Studies of Novel Phosphorus Ligand 5-(2-diphenylphosphino) phenyl-1,2-dihydro-1,2,4-triazole-3-thione and its Metal Complexes with some Transition Metals

Jornal of Biotechnology Research Center
Article 1, Volume 4, Issue 2, 2010, Pages 37-45
Authors
Matheel D. Al-Sabti; Ahmed A. H. Al-Amiery; Thorria R. Marzoog; Yasmien K. Al-Majedy
Abstract
This study involves the chemical synthesis of the novel ligand 5-(2-diphenylphosphino) phenyl-1,2-dihydro-1,2,4-triazole-3-thione (DPDTT) by the reaction of 2-diphenylphosphino benzoic acid with absolute ethanol that yield ethyl 2-diphenylphosphino benzoate and by cyclization of this compound with thiosemicarbazide, DPDTT will be produced. The chelating complexes of this ligand with Cr(III), Co(II), Ni(II), Cu(II) and Cd(II) were also prepared and studied. The new complexes were characterized by FT-IR, UV/visible spectra, and room temperature magnetic susceptibility. The stability for the prepared complexes was also measured using the density function theory and it was found that the cadmium complex is the most stable and the chromium complex is the least stable. Free ligand and its metal complexes have been tested in vitro against a number of microorganisms, like gram positive bacteria Staphylococcus aureus and gram negative bacteria E. coli, Proteus vulgaris, Pseudomonas and Klebsiella in order to assess their antimicrobial properties. All complexes showed considerable activity against all the studied bacteria.
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