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Ab-Initio Determination of La2Mo4O15 Crystal Structure from X-rays and Neutron Powder Diffraction

✍ Scribed by F. Dubois; F. Goutenoire; Y. Laligant; E. Suard; P. Lacorre

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 583 KB
Volume: 159
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.2001.9190

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✦ Synopsis

The structure of La 2 Mo 4 O 15 has been determined from both high resolution X-ray and neutron powder di4raction data. This molybdate crystallizes in a monoclinic space group P2 1 /n with cell parameters a ‫)2( 7530.9؍‬ A > , b ‫؍‬ 12.7737(2) A > , c ‫؍‬ 10.6408(2) A > , ‫؍‬ 90.2491(6)3. The structure consists of molybdenum octahedra [MoO 6 ] and tetrahedra [MoO], and lanthanum polyhedra [LaO 9 ]. Molybdenum polyhedra are connected together, forming large units [Mo 6 O 22 ], isolated by lanthanum polyhedral chains. This structure is compared with those of already known lanthanide molybdates with formula Ln 2 Mo 4 O 15 (Ln ‫؍‬ Ce, Ho).

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