The organic-inorganic hybrid salt Ethanolammonium oxalate, (C 2 H 8 NO) 2 C 2 O 4 , was synthesized and characterized by complementary structural and spectroscopic techniques. Singal crystal X-ray diffraction (XRD) analysis confirmed the crystalline structure of the obtained compound. Infrared spectroscopy revealed the characteristic vibrational modes associated with the ethanolammonium cations and oxalate anions, highlighting the presence of strong hydrogen-bonding interactions within the crystal network. UV–visible spectroscopy was employed to investigate the optical behavior of the material and provided information on its electronic transitions. In addition, Hirshfeld surface analysis was carried out to gain deeper insight into the intermolecular interactions governing the crystal packing. The results revealed that O···H—O/N—H···O hydrogen bonds constitute the dominant intermolecular contacts stabilizing the structure (62.8%), while weaker H···H and C···H interactions also contribute to the supramolecular organization at 28.8%. The combined experimental and theoretical analyses demonstrate the structural stability and rich hydrogen-bonding architecture of this oxalate-based hybrid material, making it a promising candidate for further investigations in crystal engineering and functional molecular materials.
Sèye et al. (Mon,) studied this question.
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