Na2B6Si2: A Prototype Silico-boride with Closo (B6)2– Clusters
Wilder Carrillo-Cabrera,
Julia-Maria Hübner,
Riccardo Freccero
et al.
Abstract:The compound Na2B6Si2 was synthesized
under high-pressure, high-temperature conditions at pressures ranging
from 6 to 9.5 GPa and temperatures from 1070 to 1270 K before quenching
to room temperature followed by slow decompression. The crystal structure
was determined from microcrystals using precession-assisted electron
diffraction tomography, validated by dynamical refinement and full-profile
refinements using optimized coordinates from quantum chemical calculations
(space group R3̅m, Pearson
symbol hR30, a … Show more
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