Tm2CrB3O9 was obtained by high-pressure/high-temperature syntheses at 7.5 GPa and 850 °C. The compound crystallizes homeotypically to walstromite in the triclinic space group P 1 ¯ $P\bar{1}$ (no. 2) with the unit cell parameters a = 5.9118(4) Å, b = 5.9148(4) Å, c = 8.3575(6) Å, α = 83.64(1)°, β = 71.19(1)°, and γ = 79.93(1)°, and two formula units per cell. Single-crystal and powder diffraction data are accompanied by an infrared spectroscopic investigation and the structural features of this new compound are discussed in detail.

中文翻译：

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高压高温合成第一个硅锰矿类似物硼酸盐 Tm2CrB3O9

Tm值2肌酐B3氧9是在7.5 GPa和850 °C下通过高压/高温合成获得的。该化合物在三斜空间群中与硅锰矿同型结晶 磷 1 ￣ $P\酒吧{1}$ (no. 2) 与晶胞参数A= 5.9118(4) 埃,乙= 5.9148(4) 埃,C= 8.3575(6) 埃,α= 83.64(1)°,β= 71.19(1)°，并且γ= 79.93(1)°，每个单元格有两个公式单位。单晶和粉末衍射数据伴随着红外光谱研究，并详细讨论了这种新化合物的结构特征。