Thermodynamic properties and structural geometry of KMgCl3·6H2O single crystals
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The thermodynamic properties and structural geometry of KMgCl3·6H2O were investigated using thermogravimetric analysis, differential scanning calorimetry, and nuclear magnetic resonance. The initial mass loss occurs around 351 K (=Td), which is interpreted as the onset of partial thermal decomposition. Phase transition temperatures were found at 435 K (=TC1) and 481 K (=TC2). The temperature dependences of the spin–lattice relaxation time T1 for the 1H nucleus changes abruptly near TC1. These changes are associated with changes in the geometry of the arrangement of octahedral water molecules.
Abstract
The thermodynamic properties and structural geometry of KMgCl3·6H2O were investigated using thermogravimetric analysis, differential scanning calorimetry, and nuclear magnetic resonance. The initial mass loss occurs around 351 K (=Td), which is interpreted as the onset of partial thermal decomposition. Phase transition temperatures were found at 435 K (=TC1) and 481 K (=TC2). The temperature dependences of the spin–lattice relaxation time T1 for the 1H nucleus changes abruptly near TC1. These changes are associated with changes in the geometry of the arrangement of octahedral water molecules.
참고문헌 (13)
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