2014

Synthesis and spectral investigations of some platinum metals ions coordination compounds of 4[N-(furan-2'-carboxalidene) amino] antipyrine thiosemicarbazone and 4[N-(3',4',5'-trimethoxybenzalidene) amino] antipyrine thiosemicarbazone

The present work describes the synthesis and spectral properties of some platinum metals chlorides coordination compounds of 4[N-(-(furan-2'-carboxalidene)amino]antipyrine thiosemicarbazone (FFAAPTS) and 4[N-(3',4',5'-trimethoxybenzalidene)amino]antipyrine thiosemicarbazone (TMBAAPTS). All the compounds have the general composition $MCl_2(L)$ (M = $Pd^{2+}$ or $Pt^{2+}$ ; L = FFAAPTS or TMBAAPTS) or $MCl_3(L)$ (M = $Ru^{3+}$ , $Rh^{3+}$ or $Ir^{3+}$ ; L = FFAAPTS or TMBAAPTS). All the complexes were characterized by elemental analyses, molar conductance, molecular weight, magnetic measurements, and infrared and electronic spectra. The infrared spectra suggest that both the thiosemicarbazones behave as neutral tridentate (N,N,S) ligands. The magnetic and electronic spectra suggest that $Pd^{2+}$ and $Pt^{2+}$ complexes are square planar, while $Ru^{3+}$ , $Rh^{3+}$ and $Ir^{3+}$ complexes have octahedral geometry.

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