Nd 4.67 Ru 3 Mg 8.83  – A Magnesium‐rich Compound with Ru@Mg 4 Nd 4  Square Antiprisms and Mg@Mg 8  Cubes as Basic Building Units | Zendy

Linsinger Stefan | Zendy; Rodewald Ute Ch. | Zendy; Pöttgen Rainer | Zendy

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Nd 4.67 Ru 3 Mg 8.83 – A Magnesium‐rich Compound with Ru@Mg 4 Nd 4 Square Antiprisms and Mg@Mg 8 Cubes as Basic Building Units

Author(s) -

Linsinger Stefan,

Rodewald Ute Ch.,

Pöttgen Rainer

Publication year - 2012

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.201200124

Subject(s) - magnesium , intermetallic , neodymium , ruthenium , crystallography , tantalum , substructure , materials science , crystal structure , coordination number , chemistry , metallurgy , physics , optics , ion , laser , engineering , catalysis , biochemistry , structural engineering , alloy , organic chemistry

The magnesium‐rich intermetallic compound Nd 4.67 Ru 3 Mg 8.83 was synthesized from the elements in a sealed tantalum tube in a resistance furnace. Nd 4.67 Ru 3 Mg 8.83 was characterized by X‐ray powder and single crystal diffraction: new structure type, I 4/ mmm , tI66, a = 946.0(1), c = 1789.5(4) pm, wR 2 = 0.0368, 725 F 2 values and 36 variables. Two of the five crystallographically independent magnesium sites show a small degree of Mg/Nd mixing. The ruthenium atoms have square anti‐prismatic Nd 4 Mg 4 coordination. Always six of such anti‐prisms are condensed via common edges, leading to a CsCl analogous neodymium coordination for the Mg4 atoms. The two‐dimensional networks of edge‐sharing Ru@Nd 4 Mg 4 antiprisms are condensed to a three‐dimensional network via Mg5@Mg3 4 Mg1 4 cubes. The extended magnesium substructure shows a broad range of Mg–Mg distances from 308 to 351 pm.

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