论文标题
iri $ _3 $的蜂窝和超负荷多晶型物
The honeycomb and hyperhoneycomb polymorphs of IrI$_3$
论文作者
论文摘要
据报道，在其分层的蜂窝多晶型物中，在高压下的IRI $ _3 $合成。它的晶体结构通过单晶体X射线衍射来完善。蜂窝层堆叠中的断层通过单晶衍射，同步粉粉末衍射和透射电子显微镜观察到。还描述了先前未报告的HyperhoneyComb多晶型iri $ _3 $（$β$ -IRI $ _3 $）。它在空间组FDDD中的结构由单晶XRD确定。两种材料都是高度抗性的DiMagnetic半导体，与IR（III）的低自旋D $^6 $配置一致。 IRI $ _3 $的这些多晶型物中的二维IR阵列类似于$α$ - $β$ - $β$ - li $ _2 $ iro $ _3 $的$β$ - 多晶型物，尽管IR电子配置不同。
The synthesis of IrI$_3$ at high pressure in its layered honeycomb polymorph is reported. Its crystal structure is refined by single crystal X-ray diffraction. Faults in the honeycomb layer stacking are observed by single crystal diffraction, synchrotron powder diffraction, and transmission electron microscopy. A previously unreported hyperhoneycomb polymorph of IrI$_3$ ($β$-IrI$_3$), is also described. Its structure in space group Fddd is determined by single crystal XRD. Both materials are highly-resistive diamagnetic semiconductors, consistent with a low spin d$^6$ configuration for Ir(III). The two- and three-dimensional Ir arrays in these polymorphs of IrI$_3$ are analogous to those found in the $α$- and $β$- polymorphs of Li$_2$IrO$_3$, although the Ir electron configurations are different.
