Synthesis, the Reversible Isostructural Phase Transition, and the Dielectric Properties of a Functional Material Based on an Aminobenzimidazole–Iron Thiocyanate Complex
Yang Liu, Adila Abuduheni, Fang Yang, Hongzhi Hu, Zunqi Liu
TL;DR
A new iron thiocyanate complex with aminobenzimidazole shows a reversible structural phase transition and unique dielectric properties at low temperatures.
Contribution
The study reports a novel functional material with a reversible isostructural phase transition and multiaxial dielectric anomalies at 240 K.
Findings
Compound 1 crystallizes in the P21/n space group with a two-dimensional hydrogen-bonded network.
The material undergoes a reversible isostructural phase transition and dielectric anomalies at ~240 K.
Disorder–order motion of ions and framework deformation drive the phase transition and dielectric behavior.
Abstract
By introducing disordered molecules into a crystal structure, the motion of the disordered molecules easily induces the formation of multidimensional frameworks in functional crystal materials, allowing for structural phase transitions and the realization of various dielectric properties within a certain temperature range. Here, we prepared a novel ionic complex [C7H8N3]3[Fe(NCS)6]·H2O (1) between 2-aminobenzimidazole and ferric isothiocyanate from ferric chloride hexahydrate, ammonium thiocyanate, and 2-aminobenzimidazole using the evaporation of the solvent method. The main components, the single-crystal structure, and the thermal and dielectric properties of the complex were characterized using infrared spectroscopy, elemental analysis, single-crystal X-ray diffraction, powder XRD, thermogravimetric analysis, differential scanning calorimetry, variable-temperature and…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsPolyoxometalates: Synthesis and Applications · Sulfur-Based Synthesis Techniques · Organic Chemistry Cycloaddition Reactions