✦ LIBER ✦

Synthesis, Characterization, and Crystal Structure of Na3B20, determined and refined from X-ray and Neutron Powder Data

✍ Scribed by B. Albert; K. Hofmann

Publisher: John Wiley and Sons
Year: 1999
Tongue: German
Weight: 112 KB
Volume: 625
Category: Article
ISSN: 0372-7874
DOI: 10.1002/(sici)1521-3749(199905)625:5<709::aid-zaac709>3.0.co;2-l

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✦ Synopsis

At 1050 °C boron combines with sodium forming a boride of formerly unknown composition and crystal structure. The investigation of the homogeneous, monophasic, and crystalline powder was performed using X-ray (23 °C) and neutron (±271.5 °C) diffraction methods. The structure solution led to an unusual arrangement of boron atoms, characterized by two different types of polyhedra, a distorted pentagonal bipyramid and a distorted octahedron.

The Rietveld refinement of the crystal structure was carried out in the orthorhombic space group Cmmm

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