In this study, the crystal structure of sodium nitroprusside, Na₂[Fe(CN)₅(NO)]·2H20, has been determined by an analysis by X-ray diffraction (XRD). The crystal is orthorhombic, space group Pnnm. This compound is characterized by different techniques: X-ray diffraction (XRD), differential scanning calorimetry (DSC) and impedance spectroscopy. For electrical properties, impedance spectroscopy was performed at a frequency range of 20 Hz–2 MHz. The dependence of AC conductivity on frequency was found to satisfy Jonscher's universal power law at different temperatures $\sigma \left(\omega \right)={\sigma }_{DC}\left(\omega ,T\right)+A{\omega }^{S(T,\omega )}$. This suggested hoping conduction due to three theoretical models. The latter can be attributed to the correlated barrier hopping (CBH) model in region I, overlapping large polaron tunneling (OLPT) in region II and non-overlapping small polaron tunneling (NSPT) mechanism in region III. The temperature dependence and dielectric relaxation of the DC conductivity satisfied the Arrhenius law. The activation energy ranged from 0.033 to 0.164 eV and was similar in the conduction and relaxation mechanisms, indicating that the transport mechanisms were based on hopping phenomena. Moreover, the modulus plots has been characterized by full width at half height or in terms of a non-experiential decay function ϕ(t) = exp(−t/τ)β. The values of the activation energies obtained from the electrical conductivity and electric modulus are near; which suggests that the transport is probably due to the ion hopping mechanisms. Furthermore, this behavior was confirmed by both Nyquist and Argand's plots of dielectric impedance at different measuring temperatures.

在这项研究中，已通过X射线衍射（XRD）分析确定了硝普钠Na ₂ [Fe（CN）₅ （NO）]·2H2O的晶体结构。晶体是正交晶体，空间群为Pnnm。该化合物的特征采用不同的技术：X射线衍射（XRD），差示扫描量热法（DSC）和阻抗谱。对于电性能，在20 Hz–2 MHz的频率范围内进行了阻抗谱分析。发现交流电导率对频率的依赖性在不同温度下均满足Jonscher的通用功率定律$\sigma （\omega ）={\sigma }_{dC}（\omega ，Ť）+\mathrm{一种}{\omega }^{\mathrm{小号}（Ť，\omega ）}$。由于三个理论模型，这表明希望传导。后者可归因于区域I中的相关势垒跳跃（CBH）模型，区域II中的重叠大极化子隧穿（OLPT）和区域III中的不重叠小极化子隧穿（NSPT）机制。直流电导率的温度依赖性和介电弛豫满足阿伦尼乌斯定律。活化能的范围为0.033至0.164 eV，并且在传导和弛豫机制上都相似，这表明传输机制是基于跳跃现象的。此外，模量图的特征在于半高处的全宽或非经验衰减函数decay（t）= exp（-t /τ）β。由电导率和电模量得到的活化能的值接近。这表明该传输可能是由于离子跳跃机制引起的。此外，在不同的测量温度下，奈奎斯特（Nyquist）和阿尔甘德（Argand）的介电阻抗图都证实了这种行为。