Processing on crystal growth, structure, thermal property, and nuclear magnetic resonance of organic-inorganic hybrid perovskite type [NH 3 (CH 2 ) 6 NH 3 ]ZnCl 4 crystal.

Organic-inorganic hybrid compounds have recently gained significant attention in recent years due to their diverse applications. Herein, [NH 3 (CH 2 ) 6 NH 3 ]ZnCl 4 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 1 H and 13 C were highly symmetric below T C , whereas their symmetry was lowered above T C . The change of N-H⋯Cl hydrogen bond from XRD results and the change of 14 N NMR chemical shifts was due to the changes to the coordination geometry of Cl - around Zn 2+ in the ZnCl 4 anion. The activation energy of 1 H was three times greater than that of 13 C, and this result indicates that the energy transfer of 13 C was easier than those of 1 H. We compared the results for [NH 3 (CH 2 ) n NH 3 ]ZnCl 4 ( n = 6) studied here with those for n = 2, 3, 4, and 5 obtained from previous studies. The characteristics of the length of CH 2 in the methylene chain are expected to be used for potential applications in the near future.