Insight into the Structural and Physical Properties of Semiorganic KHOOD Single Crystal

Abstract

A metal–organic hybrid compound named potassium hydrogen oxalate oxalic acid dihydrate (KH<inf>3</inf>(C<inf>4</inf>O<inf>8</inf>)·2H<inf>2</inf>O) single crystal (KHOOD) is synthesized using a facile and different approach. The obtained crystals are thoroughly investigated using single crystal XRD (SCXRD), powder XRD (PXRD), UV–Vis absorption, photoluminescence, TGA-DTA and dielectric measurements. The crystal system is confirmed and the structure of the crystal is solved using single crystal X-ray diffraction (SCXRD) analysis to the R value of 0.024. The PXRD measurements are employed to evaluate the structural properties of the crystal. Absorption measurements are carried out in the UV–visible region, and photoluminescence measurements show strong blue emission at 427 nm. Thermal stability and degradation in the crystal is explored using TGA-DTA analysis. Frequency dependent electrical response of the crystal is investigated and parameters such as frequency dependent complex dielectric constant, complex impedance, loss factor, ac conductivity and Cole–Cole plots are determined. These results demonstrate the feasibility of facile synthesis of KH<inf>3</inf>(C<inf>4</inf>O<inf>8</inf>)·2H<inf>2</inf>O single crystal used in modern optoelectronic applications. © 2022, The Tunisian Chemical Society and Springer Nature Switzerland AG.