Study of Selected Spectral Properties and Complex Formation with Transition Metals Ions of a New Schiff’s Base Containing Fluorescein and Sulfamide Fragments

Abstract

A new azomethine based on N-aminofluorescein and ortho-tosylaminobenzaldehyde has been synthesized. Structure and properties of the obtained compound have been studied by means of IR, ¹H NMR, and electron absorption spectroscopy as well as potentiometry. Using the DFT method, quantum-chemical simulation of electronic absorption spectra has been performed. The complexation of the obtained azomethine in solutions with Cu²⁺, Ni²⁺, and Co²⁺ cations has been studied. Metal chelates (1:2) with Cu(II), Ni(II), Zn(II), and Cd(II) have been isolated. Octahedral structure of the coordination site has been suggested for the obtained metal chelates.