MORPHOLOGICAL AND ELEMENTAL CHARACTERIZATION OF POLY[ETHYLENEDIAMINETETRAACETATO-AQUA-DISODIUM-NICKEL(II)] BY SEM–EDS ANALYSIS

Poly[ethylenediaminetetraacetato-aqua-disodium-nickel(II)] was synthesized and characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) to investigate its morphology and elemental composition. SEM analysis revealed the formation of highly crystalline elongated prismatic and rod-like crystals with smooth surfaces and well-defined edges. The observed crystal habit indicates anisotropic crystal growth and a high degree of structural organization within the coordination polymer. EDS analysis confirmed the presence of carbon, nitrogen, oxygen, sodium, and nickel as the principal constituents of the synthesized compound. Quantitative elemental analysis showed contents of 49.86 wt.% C, 4.79 wt.% N, 33.01 wt.% O, 3.32 wt.% Na, and 9.02 wt.% Ni. The appearance of characteristic nickel peaks together with the donor atoms of the EDTA ligand confirms successful complex formation. The combined SEM-EDS results demonstrate the formation of a highly crystalline nickel(II)-EDTA coordination polymer with good compositional purity and structural homogeneity.