Optical, UV-Vis spectroscopy studies, electrical and dielectric properties of transition metal-based of the novel organic–inorganic hybrid (C₆H10N₂)(Hg₂Cl₅)₂.3H₂O

Abstract

In this work, we are interested in the synthesis of new hybrid material (C6[Formula: see text]N2)(Hg2[Formula: see text].3H2O grown by hydrothermal methods. X-ray diffraction indicates that this compound crystallizes at 150(2) K in the monoclinic system with [Formula: see text]/[Formula: see text] space group, with the following unit cell parameters: [Formula: see text](15) Å, [Formula: see text](15) Å, [Formula: see text](6) Å, [Formula: see text] and [Formula: see text]. On the other hand, the optical properties of this compound were studied using ultraviolet-visible (UV-Vis) spectroscopy in the range 200–800[Formula: see text]nm. Furthermore, the optical absorbances are used to determine the absorption coefficient [Formula: see text] and the optical band gap [Formula: see text], so the Tauc model was used to determine the optical gap energy of the compound (C6[Formula: see text]N2)(Hg2[Formula: see text].3H2O. The analysis of the results revealed the existence of optical allowed indirect transition mechanisms with the band gap energy equal to (2.37[Formula: see text]eV) for liquid and (4.33[Formula: see text]eV) for solid. Impedance measurements indicate that the electrical and dielectric properties are strongly dependent on both temperature and frequency. Nyquist plots ([Formula: see text] versus [Formula: see text]) show that the conductivity behavior is accurately represented by an equivalent circuit model which consists of a series combination of bulk and grain boundary. Furthermore, the angular frequency dependence plots of the real and imaginary parts, [Formula: see text] and [Formula: see text], of complex dielectric permittivity [Formula: see text] and tan [Formula: see text] losses at several temperatures between 303 and 453[Formula: see text]K were studied for the title compound. Finally, the modulus plots can be characterized by the presence of two relaxation peaks.

Structural, electronic and optical properties of synthesized schiff base compound-validation with a computational method

“…Analyzing the UV spectra in chloroform corresponding to the electronic transitions of individual and Schiff base molecular compounds is illustrated in figures 6(a) and (c) revealing that the synthesized Schiff base compound with strong absorption between 270 and 300 nm in wavelength involves n to π * transitions and associated Tauc's plot [61] measuring the corresponding energy involved during the transition. Studies of UV spectra (provided in supplementary data) have absorption peaks in wavelength regions from 240 nm to 300 nm for all the compounds.…”

Fabrication of Highly Sensitive YCeO Chemo-resistive Gas Sensor for Selective Detection of CO2

“…The higher the density, the larger the refractive index. 45 Liquids transform density with temperature more simply than solids so temperature is typically not measured when measuring the index of a solid unless exact precision is required. But in terms of solid, as compression increases, the density becomes greater because you are compressing the material more which makes the index higher.…”

Crystal structure and optical characterization of a new hybrid compound, C6H9N2FeCl4, with large dielectric constants for field-effect transistors

“…This value proves that the title compound is a suitable semiconductor for optoelectronics applications. 51 …”

“…This value proves that the title compound is a suitable semiconductor for optoelectronics applications. 51 The excitation characteristics and capability of electron transport may be reasonably predicted qualitatively using the border molecular orbital. 52 Fig.…”