| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1605717 | Journal of Alloys and Compounds | 2016 | 5 Pages |
•A new Pt-doped yttrium boride has been synthesized.•Platinum is located in two interstitial atom sites, one of which exhibits high degree of occupancy.•Insertion of platinum induces significant changes into boron atom framework.•Partially occupied Pt atom sites interlink the [B11] and [B13] units.
A new Pt-doped yttrium boride of the YB50 family, YB45−xPty, x = 2.12, y = 0.21 (space group Pbam, a = 16.6246 (4) Å, b = 17.6453 (4) Å, c = 9.4167 (2) Å), has been synthesized by arc-melting pure elements and subsequent annealing at 1123 K. A single crystal has been studied in order to assess the Pt-doping effect on the crystal structure. Insertion of Pt in two 4h interstitial sites of the boron atom framework leads to the transformation of –[B12]–[B12]– icosahedral chain into –[B11]–Pt–[B11]– for 38.6% of them as well as, to a lesser extent, induces disorder into the [B15] polyhedron and neighboring interstitial B site (97.3% vs 2.7%).
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