Synthesis, Polymorphism and Thermal Decomposition Process of (n-C4H9)4NRE(BH4)4 for RE = Ho, Tm and Yb.
Wojciech WegnerTomasz JarońPublished in: Materials (Basel, Switzerland) (2021)
In total, three novel organic derivatives of lanthanide borohydrides, n-But4NRE(BH4)4 (TBAREB), RE = Ho, Tm, Yb, have been prepared utilizing mechanochemical synthesis and purified via solvent extraction. Studies by single crystal and powder X-ray diffraction (SC-XRD and PXRD) revealed that they crystalize in two polymorphic forms, α- and β-TBAREB, adopting monoclinic (P21/c) and orthorhombic (Pnna) unit cells, previously found in TBAYB and TBAScB, respectively. Thermal decomposition of these compounds has been investigated using thermogravimetric analysis and differential scanning calorimetry (TGA/DSC) measurements, along with the analysis of the gaseous products with mass spectrometry (MS) and with analysis of the solid decomposition products with PXRD. TBAHoB and TBAYbB melt around 75 °C, which renders them new ionic liquids with relatively low melting points among borohydrides.
Keyphrases
- ionic liquid
- high resolution
- mass spectrometry
- energy transfer
- electron microscopy
- induced apoptosis
- cell cycle arrest
- room temperature
- liquid chromatography
- pi k akt
- ms ms
- multiple sclerosis
- gas chromatography
- single cell
- single molecule
- high performance liquid chromatography
- signaling pathway
- capillary electrophoresis
- cell death
- computed tomography
- endoplasmic reticulum stress
- cell proliferation
- magnetic resonance imaging
- high speed
- metal organic framework
- solid state