Цахим шуудангийн бүртгэл: 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