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Transformation of trigonal planar B4 into zigzag B4 units within the new boride series Ti2–xM1+x–δIr3+δB3 (x = 0.5 for M = V–Mn, x = 0 for M = Mn–Ni and δ < 0.2)
Solid State Sciences ( IF 3.4 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.solidstatesciences.2020.106294
Jan P. Scheifers , Michael Küpers , Yuemei Zhang , Laura Lutz‒Kappelman , Gordon J. Miller , Boniface P.T. Fokwa

Abstract In metal‒rich borides, numerous boron fragments Bn (n = 2, 3, 4, 5, 6) have been discovered, the B4 units being the most versatile with four different shapes (bent, zigzag, trigonal planar and tetrahedral). We report on the new boride series Ti2-xM1+x–δIr3+δB3 (x = 0.5 for M = V–Mn, x = 0 for M = Mn–Ni and δ 6 ‾ 2m, no. 189) to the Ti1+xRh2‒x+yIr3‒yB3‒type (Pbam, no. 55) leads to a change of B4 shape from trigonal planar B4 (M = V–Mn) to zigzag B4 fragment (M = Mn–Ni). Even though there is no group‒subgroup relationship between the two structures, we present how the Ti1+xOs2‒xRuB2‒type structure can easily be geometrically derived from the Ti1+xRh2-x+yIr3-yB3‒type.

中文翻译:

在新硼化物系列 Ti2–xM1+x–δIr3+δB3 中将三角形平面 B4 转变为锯齿形 B4 单元(对于 M = V–Mn,x = 0.5,对于 M = Mn–Ni 和 x = 0,δ < 0.2)

摘要 在富金属硼化物中,发现了大量硼碎片 Bn (n = 2, 3, 4, 5, 6),其中 B4 单元最为通用,具有四种不同的形状(弯曲、锯齿形、三角平面和四面体)。我们向 Ti1+ 报告了新的硼化物系列 Ti2-xM1+x–δIr3+δB3(对于 M = V–Mn,x = 0.5,对于 M = Mn–Ni,x = 0 和 δ 6 ‾ 2m,编号 189) xRh2-x+yIr3-yB3-type (Pbam, no. 55) 导致 B4 形状从三角形平面 B4 (M = V-Mn) 变为锯齿形 B4 片段 (M = Mn-Ni)。尽管这两种结构之间没有群-亚群关系,但我们展示了如何从 Ti1+xRh2-x+yIr3-yB3-型轻松地从几何上推导出 Ti1+xOs2-xRuB2-型结构。
更新日期:2020-09-01
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