Synthesis and Characterization of Cr (III) Macrocyclic Schiff Base Complexes

Abstract

Ninety Cr(III) macrocyclic Schiff base complexes of the type [CrL_n^(1-10) X_2 ]X(Where X = Cl- or NO-3 or CH3COO- and = macrocyclic Schiff base ligands derived from condensation of trimesic acid or p-phthalic acid or squaric acid with different aliphatic diamines) have been synthesised and characterised by elemental analysis; molar conductance; electronic spectra; IR; magnetic moment and XPS i.e. X-ray Photoelectron spectra data. An octahedral geometry was established for them.

"Synthesis and Characterisation of Zinc (II) and Nickel (II) Complexes with 3-Hydroxy-4-(2-Hydroxy Phenyl) Amino Cyclobut-3-Ene-1,2-Dione"

“…One of such organic ligands which bond with metal to produce a complex is 3-hydroxy-4-(2-hydroxy phenyl) amino cyclobut-3-ene-1,2-dione (condensation reaction of squaric acid and 2-aminophenol). From a study conducted by Dharmendra and Shekar, squaric acid condensation reactions with various aliphatic diamines yielded Schiff base ligands [3]. This ligand can bond with various transition metals.…”