Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals
The thermal, physical, and molecular dynamics of layered hybrid type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu,...
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| Format: | Article |
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MDPI AG
2020-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/8/1812 |
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| author | Ae Ran Lim |
| author_facet | Ae Ran Lim |
| author_sort | Ae Ran Lim |
| collection | DOAJ |
| description | The thermal, physical, and molecular dynamics of layered hybrid type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) crystals were investigated by thermogravimetric analysis (TGA) and magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. The temperatures of the onset of partial thermal decomposition were found to depend on the identity of <i>M</i>. In addition, the Bloembergen–Purcell–Pound curves for the <sup>1</sup>H spin-lattice relaxation time T<sub>1ρ</sub> in the rotating frames of CH<sub>3</sub>CH<sub>2</sub> and NH<sub>3</sub>, and for the <sup>13</sup>C T<sub>1ρ</sub> of CH<sub>3</sub> and CH<sub>2</sub> were shown to exhibit minima as a function of the inverse temperature. These results confirmed the rotational motion of <sup>1</sup>H and <sup>13</sup>C in the C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub> cation. Finally, the T<sub>1ρ</sub> values and activation energies E<sub>a</sub> obtained from the <sup>1</sup>H measurements for the H‒Cl···<i>M</i> (<i>M</i> = Zn and Cd) bond in the absence of paramagnetic ions were larger than those obtained for the H‒Cl···<i>M</i> (<i>M</i> = Co and Cu) bond in the presence of paramagnetic ions. Moreover, the E<sub>a</sub> value for <sup>13</sup>C, which is distant from the <i>M</i> ions, was found to decrease upon increasing the mass of the <i>M</i> ion, unlike in the case of the E<sub>a</sub> values for <sup>1</sup>H. |
| first_indexed | 2024-03-10T20:27:28Z |
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| id | doaj.art-c704bb0fd2e24534a4cdf4d037e5451a |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T20:27:28Z |
| publishDate | 2020-04-01 |
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| series | Molecules |
| spelling | doaj.art-c704bb0fd2e24534a4cdf4d037e5451a2023-11-19T21:40:43ZengMDPI AGMolecules1420-30492020-04-01258181210.3390/molecules25081812Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) CrystalsAe Ran Lim0Analytical Laboratory of Advanced Ferroelectric Crystals and Department of Science Education, Jeonju University, Jeonju 55069, KoreaThe thermal, physical, and molecular dynamics of layered hybrid type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) crystals were investigated by thermogravimetric analysis (TGA) and magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. The temperatures of the onset of partial thermal decomposition were found to depend on the identity of <i>M</i>. In addition, the Bloembergen–Purcell–Pound curves for the <sup>1</sup>H spin-lattice relaxation time T<sub>1ρ</sub> in the rotating frames of CH<sub>3</sub>CH<sub>2</sub> and NH<sub>3</sub>, and for the <sup>13</sup>C T<sub>1ρ</sub> of CH<sub>3</sub> and CH<sub>2</sub> were shown to exhibit minima as a function of the inverse temperature. These results confirmed the rotational motion of <sup>1</sup>H and <sup>13</sup>C in the C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub> cation. Finally, the T<sub>1ρ</sub> values and activation energies E<sub>a</sub> obtained from the <sup>1</sup>H measurements for the H‒Cl···<i>M</i> (<i>M</i> = Zn and Cd) bond in the absence of paramagnetic ions were larger than those obtained for the H‒Cl···<i>M</i> (<i>M</i> = Co and Cu) bond in the presence of paramagnetic ions. Moreover, the E<sub>a</sub> value for <sup>13</sup>C, which is distant from the <i>M</i> ions, was found to decrease upon increasing the mass of the <i>M</i> ion, unlike in the case of the E<sub>a</sub> values for <sup>1</sup>H.https://www.mdpi.com/1420-3049/25/8/1812crystal growthorganic-inorganic hybrid compound(C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub>CoCl<sub>4</sub>thermodynamicMAS NMR |
| spellingShingle | Ae Ran Lim Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals Molecules crystal growth organic-inorganic hybrid compound (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub>CoCl<sub>4</sub> thermodynamic MAS NMR |
| title | Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals |
| title_full | Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals |
| title_fullStr | Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals |
| title_full_unstemmed | Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals |
| title_short | Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub><i>M</i>Cl<sub>4</sub> (<i>M</i> = <sup>59</sup>Co, <sup>63</sup>Cu, <sup>65</sup>Zn, and <sup>113</sup>Cd) Crystals |
| title_sort | thermodynamic physical and structural characteristics in layered hybrid type c sub 2 sub h sub 5 sub nh sub 3 sub sub 2 sub i m i cl sub 4 sub i m i sup 59 sup co sup 63 sup cu sup 65 sup zn and sup 113 sup cd crystals |
| topic | crystal growth organic-inorganic hybrid compound (C<sub>2</sub>H<sub>5</sub>NH<sub>3</sub>)<sub>2</sub>CoCl<sub>4</sub> thermodynamic MAS NMR |
| url | https://www.mdpi.com/1420-3049/25/8/1812 |
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