Synthesis and crystal structure of lithium beryllium deuteride Li2BeD4 |
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Authors: | Bulychev Boris M Shpanchenko Roman V Antipov Evgeny V Sheptyakov Denis V Bushmeleva Svetlana N Balagurov Anatoly M |
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Institution: | Department of Chemistry, Moscow State University, 119992 Moscow, Russia. |
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Abstract: | Single-phase ternary deuteride Li(2)BeD(4) was synthesized by a high-pressure high-temperature technique from LiD and BeD(2). The crystal structure of Li(2)BeD(4) was solved from X-ray and neutron powder diffraction data. The compound crystallizes in the monoclinic space group P2(1)/c with lattice parameters a = 7.06228(9) A, b = 8.3378(1) A, c = 8.3465(1) A, beta =93.577(1) degrees, and Z = 8. Its structure contains isolated BeD(4) tetrahedra and Li atoms that are located in the structure interstices. Li(2)BeD(4) does not undergo any structural phase transitions at temperatures down to 8 K. |
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