Journal
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
Volume 75, Issue 6-7, Pages 589-595Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/znb-2020-0045
Keywords
crystal structure; high-pressure chemistry; samarium borate; vibrational spectroscopy
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Funding
- Erasmus+ Programme of the European Union
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gamma-Sm(BO2)(3) was obtained via a high-pressure/high-temperature approach in a multi-anvil apparatus at 10 GPa and 1673 K. It crystallizes in the orthorhombic space group Pca2(1) (no. 29) with the lattice parameters a = 18.3088(8), b = 4.4181(2), and c = 4.2551(2) angstrom. The compound was analysed by means of X-ray diffraction and vibrational spectroscopy. The structure is isotypic to that of the already known meta-oxoborates gamma-Sm(BO2)(3) (RE = La-Nd) and built up of a highly condensed borate framework containing three-, four-, six-, and ten-membered rings. Next to neodymium, samarium represents the second rare earth element that forms the alpha-, beta-, and gamma-modification of the four known rare earth meta-oxoborate structure types.
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