Processing on crystal growth, structure, thermal property, and nuclear magnetic resonance of organic-inorganic hybrid perovskite type [NH3(CH2)6NH3]ZnCl4 crystal

초록

Organic-inorganic hybrid compounds have recently gained significant attention in recent years due to their diverse applications. Herein, [NH3(CH2)(6)NH3]ZnCl4 crystals were grown, and their triclinic structure, phase transition temperature (T-C = 408 K), and high thermal stability (T-d = 584 K) was determined using X-ray diffraction (XRD), differential scanning calorimetry, and thermogravimetry measurements. By analyzing the chemical in response to temperature changes, we observed that the coordination geometry around H-1 and C-13 were highly symmetric below T-C, whereas their symmetry was lowered above T-C. The change of N-H & ctdot;Cl hydrogen bond from XRD results and the change of N-14 NMR chemical shifts was due to the changes to the coordination geometry of Cl- around Zn2+ in the ZnCl4 anion. The activation energy of H-1 was three times greater than that of C-13, and this result indicates that the energy transfer of C-13 was easier than those of H-1. We compared the results for [NH3(CH2)(n)NH3]ZnCl4 (n = 6) studied here with those for n = 2, 3, 4, and 5 obtained from previous studies. The characteristics of the length of CH2 in the methylene chain are expected to be used for potential applications in the near future.