An open-ended coaxial probe was used to study the dielectric relaxation of neodymium chloride (NdCl₃) in water and in methanol at room temperature over the frequency range 0.2–40.0 GHz. An equivalent circuit model based on the antenna model was used to obtain the dielectric spectra with the effective removal of spurious effects. This extends the use of the open-ended coaxial probe technique for highly conductive substances. The structural and thermodynamic parameters obtained from the dielectric spectra of aqueous NdCl₃ solutions suggest that solvent-separated ion pairs and solvent-shared ion pairs dominate the low-frequency behavior at low concentrations. In methanol, solvent-shared ion pair relaxation modes were detected. No contact pair relaxation was observed in either solvent. Under all conditions, Nd³⁺ was strongly solvated, as reflected by its high effective hydration number. The estimated association constant of NdCl₃ in water at infinite dilution was within the literature values and was lower than that observed in methanol.

一个开放式同轴探针用于研究氯化钕（NdCl ₃）在室温和0.2–40.0 GHz频率范围内在水中和甲醇中的介电弛豫。基于天线模型的等效电路模型用于获得有效消除杂散效应的介电谱。这扩展了开放式同轴探针技术对高导电性物质的使用。由NdCl ₃水溶液的介电谱获得的结构和热力学参数解决方案表明，溶剂分离的离子对和溶剂共享的离子对在低浓度下主导着低频行为。在甲醇中，检测到溶剂共享的离子对弛豫模式。在两种溶剂中均未观察到接触对松弛。在所有条件下，Nd ^3+均被高度溶剂化，这体现在其高有效水合数上。无限稀释的水中NdCl ₃的估计缔合常数在文献值范围内，并且低于在甲醇中观察到的缔合常数。