Keywords : Molar absorbance

Synthesis and Characterization of Some Ni(II) and Cu(II) Complexes with Carboxymethyl Chitosan

Marwan Ahmed Jassim Al-Salami; Moneer Khadhim Muhsin; Ahmed A. H. Al-kadhimi

Kirkuk University Journal-Scientific Studies, 2022, Volume 17, Issue 2, Pages 20-26
DOI: 10.32894/kujss.2022.132503.1055

This research concerns the synthesis of two carboxymethyl chitosan (CMCs) complexes with Cu(II) and Ni(II). The synthesized complexes were characterized using (FT-IR) showing absorption peaks in the region (566 cm-1) which belongs to the bonds of Cu(II) with carboxymethyl chitosan [Cu(CMCs)2] and (580 cm-1) which belongs to the bonds of Ni(II) with carboxymethyl chitosan [Ni(CMCs)2]. Molar conductivity was determined for both complexes [Cu(CMCs)2] and [Ni(CMCs)2] and the results showed that these complexes non-electrolytes . UV-visible has been also recorded for [Cu(CMCs)2] complex solution (0.50 x 10-3M) is absorbed at (295 nm). It is proposed that [Cu(CMCs)2] possess a square planar structure. Whereas [Ni(CMCS)2] is absorbed at (290 nm) supposing that the structure of this complexes is tetrahedral. The absorbance of both complexes can be attributed to the (π→π*).