Valence-Electron-Driven Ru/Ti Site Preference in the New Ternary Boride Ti10Ru19B8: Synthesis and Single-Crystal Structure Refinement

Boniface P. T. Fokwa

Powder samples and single crystals of Ti10Ru19B8 were synthesized by arc-melting the elements in a water-cooled copper crucible under an argon atmosphere and characterized by single-crystal X-Ray diffraction and energy-dispersive X-ray analysis. The new silver-like compound crystallizes in the tetragonal system with the Zn11Rh18B8-type structure (space group P4/mbm (no. 127), Z = 2; a = 17.591(5) Å, c = 2.9645(13) Å, R1 = 0.0708, wR2 = 0.0992, GooF = 1.047 for all 1266 reflections and 58 parameters). The interesting characteristic in this new ternary variant is the valence electron driven site-preferential mixture of both titanium and ruthenium forming “ladders” along the [001] direction.

Mots clés: Physical Sciences

Boniface P. T. Fokwa. Valence-Electron-Driven Ru/Ti Site Preference in the New Ternary Boride Ti10Ru19B8: Synthesis and Single-Crystal Structure Refinement. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2009, 635 (13-14), pp.2258. ⟨10.1002/zaac.200900192⟩. ⟨hal-00509229⟩