Abstract

The physical properties of the organic–inorganic hybrid crystals having the formula [NH3(CH2)3NH3]ZnX4 (X = Cl, Br) were investigated. The phase transition temperatures (TC; 268K for Cl and 272K for Br) of the two crystals bearing different halogen atoms in their skeletons were determined through differential scanning calorimetry. The thermodynamic properties of the two crystals were investigated through thermogravimetric analysis. The structural dynamics, particularly the role of the [NH3(CH2)3NH3] cation, were probed through 1H and 13C magic-angle spinning nuclear magnetic resonance spectroscopy as a function of temperature. The 1H and 13C NMR chemical shifts did not show any changes near TC. In addition, the 1H spin–lattice relaxation time (T) varied with temperature, whereas the 13C T values remained nearly constant at different temperatures. The T values of the atoms in [NH3(CH2)3NH3]ZnCl4 were higher than those in [NH3(CH2)3NH3]ZnBr4. The observed differences in the structural dynamics obtained from the chemical shifts and T values of the two compounds can be attributed to the differences in the bond lengths and halogen atoms. These findings can provide important insights or potential applications of these crystals.

Details

Title
Physicochemical properties and structural dynamics of organic–inorganic hybrid [NH3(CH2)3NH3]ZnX4 (X = Cl and Br) crystals
Author
Lim, Ae Ran 1 ; Kim Sun Ha 2 ; Joo, Yong Lak 3 

 Jeonju University, Department of Carbon Convergence Engineering, Jeonju, Korea (GRID:grid.411845.d) (ISNI:0000 0000 8598 5806); Jeonju University, Department of Science Education, Jeonju, Korea (GRID:grid.411845.d) (ISNI:0000 0000 8598 5806) 
 Korea Basic Science Institute, Seoul Western Center, Seoul, Korea (GRID:grid.410885.0) (ISNI:0000 0000 9149 5707); Kyungpook National University, Department of Chemistry, Daegu, Korea (GRID:grid.258803.4) (ISNI:0000 0001 0661 1556) 
 Cornell University, Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Ithaca, USA (GRID:grid.5386.8) (ISNI:000000041936877X) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2513411509
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.