eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 April 2009 5 1 79 82 juc 684 article Some Five - coordinated organometallic Complexes of lridium (I) with Mixed- ligands R.N. Pandey 1 Devendra Pd. Singh 1 Prasashti Pande 1 Gunjan Kumari 1 P.G. Centre of Chemistry (M.U.) College of Commere PATNa - 800020 (INDIA) <p style="text-align: justify;">Five -coordinated mixed- ligands organometallic complexes of low - valent iridium(I)with triphenyl Phosphine (Pf<sub>3</sub>)and 3-(4-Pyridyl)-triazoline - 5- thione (PytTH)and its 4- Phenyl substituted derivative (PPytTH)have been prepared and characterized on the basis of micro -analytical, magnetic moment and electronic and IR Spectral data. Trans -[IrCl(CX)(Pf<sub>3</sub>)<sub>2</sub>] (X= O/S) undergo Substitution with triazole ligands giving [Ir(CX)(Pf<sub>3</sub>)<sub>2</sub> Ligand] in which deprotonation of imino group of hydrogen occurs and ligand acts as bidentate N, S-donor. Metal-ligand vibrations in far IR region have been located and tentatively assigned.</p> <p>&nbsp;</p> https://journalofchemistry.org/paper/684/ Organometallic complexes five co-ordinated iridium