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Synthesis, crystal structures, and thermodynamic properties of two new lanthanide complexes.
- Source :
- Journal of Thermal Analysis & Calorimetry; Mar2018, Vol. 131 Issue 3, p2993-3001, 9p
- Publication Year :
- 2018
-
Abstract
- Two new complexes [Tb(2,3-DClBA)<subscript>3</subscript>(5,5′-dmebipy)(H<subscript>2</subscript>O)]<subscript>2</subscript> and [Er(2,3-DClBA)<subscript>3</subscript>(5,5′-dmebipy)(H<subscript>2</subscript>O)]<subscript>2</subscript> (2,3-DClBA = 2,3-dichlorobenzoate; 5,5′-dmebipy = 5,5′-dimethylbipyridine) were prepared and characterized by single crystal X-ray diffraction, elemental analysis, IR spectra, and TG/DSC technology. Single crystal X-ray diffraction data show that the two complexes are isomorphous. The complex is a binuclear molecular. Each Ln<superscript>3+</superscript> center is coordinated by six oxygen atoms and two nitrogen atoms to form a distorted square antiprism geometry. The supramolecular architecture of the complex is constructed by H bond and halogen–halogen interactions. The thermal decomposition mechanism of the two complexes has been studied by TG/DSC technology. The low-temperature heat capacities of the complexes have been measured using a physical property measurement system in the temperature range from 10 to 302 K. The heat capacities were fitted to the polynomial equations by a least square method, and the thermodynamic functions were calculated based on the curve fitting. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13886150
- Volume :
- 131
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Thermal Analysis & Calorimetry
- Publication Type :
- Academic Journal
- Accession number :
- 128150029
- Full Text :
- https://doi.org/10.1007/s10973-017-6672-y