The high-pressure cadmium borate Cd6B22O39·H2O

Autor:	Nina Ciaghi, Hubert Huppertz, Gerhard Sohr, Klaus Wurst
Rok vydání:	2015
Předmět:	Molar Cadmium Hydrolysis chemistry High pressure chemistry.chemical_element Capsule General Chemistry Crystal structure Boron Hydrate Nuclear chemistry
Zdroj:	Zeitschrift für Naturforschung B. 70:183-190
ISSN:	1865-7117 0932-0776
DOI:	10.1515/znb-2014-0243
Popis:	Single crystals of the hydrous cadmium borate Cd6B22O39·H2O were obtained through a high-pressure/high-temperature experiment at 4.7 GPa and 1000 °C using a Walker-type multianvil apparatus. CdO and partially hydrolyzed B2O3 were used as starting materials. A single crystal X-ray diffraction study has revealed that the structure of Cd6B22O39·H2O is similar to that of the type M 6B22O39·H2O (M=Fe, Co). Layers of corner-sharing BO4 groups are interconnected by BO3 groups to form channels containing the metal cations, which are six- and eight-fold coordinated by oxygen atoms. The compound crystallizes in the space group Pnma (no. 62) [R1=0.0379, wR2=0.0552 (all data)] with the unit cell dimensions a=1837.79(5), b=777.92(2), c=819.08(3) pm, and V=1171.00(6) Å3. The IR and Raman spectra reflect the structural characteristics of Cd6B22O39·H2O.
Databáze:	OpenAIRE
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