In this study, five complexes of the type [CrLCl2]Cl [where L = S4 macrocyclic ligands] were prepared and analyzed by elemental analysis, molar conductivity, infrared and X-ray photoelectron spectroscopy and their geometry was established as octahedral.

One hundred twenty complexes of Pb(II) of the type [ 1 10 Pb1 3   X2] (where X= Cl or Br or NO3 or CH3COO and 1 10 L1 3   = macrocyclic ligands derived from the condensation of trimesic acid or þthathalic acid or squaric acid with different aliphatic diamines in 2:2 molar ratio) have been synthesized and characterized by elemental analysis, molar conductivity, Infrared and XPS i.e. X-ray photoelectron spectra data. An octahedral geometry was also established for them