High-pressure Synthesis and Characterization of the Alkali Metal Borate HP-RbB3O5

Autor:	Gerhard Sohr, Stephanie C. Neumair, Hubert Huppertz
Rok vydání:	2012
Předmět:	Inorganic chemistry chemistry.chemical_element General Chemistry Crystal structure Alkali metal Oxygen Rubidium Boric acid chemistry.chemical_compound Crystallography chemistry High pressure Rubidium carbonate Boron
Zdroj:	Zeitschrift für Naturforschung B. 67:1197-1204
ISSN:	1865-7117 0932-0776
DOI:	10.5560/znb.2012-0248
Popis:	The rubidium triborate HP-RbB3O5 (HP=high-pressure) was synthesized under highpressure =high-temperature conditions of 6 GPa and 1000° C in a Walker-type multianvil apparatus. The precursor was gained from a mixture of rubidium carbonate Rb2CO3 and boric acid H3BO3 heated at 850 °C under normal pressure conditions. The single-crystal structure determination showed that HP-RbB3O5 is isotypic to HP-KB3O5, crystallizing monoclinically with eight formula units in the space group C2/c possessing the lattice parameters a=982.3(2), b=885.9(2), c=919.9(2) pm, and β = 104:0(1)°. The boron-oxygen framework consists of trigonal-planar BO3 groups as well as corner- and edge-sharing BO4 tetrahedra that are connected to a three-dimensional framework. Therein, the rubidium cations are surrounded by 10 oxygen anions. IR- and Raman-spectroscopic investigations were performed on single crystals of the compound.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1782522fb352c8c43fd21412ad030003 https://doi.org/10.5560/znb.2012-0248 Zobrazit plný text záznamu