"Hard-Soft" Synthesis of SrCrO 3- d Superstructure Phases
"Hard-Soft" Synthesis of SrCrO 3- d Superstructure Phases
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SrCrO 3-d 超结构相的“硬-软”合成
DOI：
10.1002/ange.201206203
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发表时间：
2012
影响因子：
--
通讯作者：
Arévalo-López A
中科院分区：
文献类型：
--
作者：
Arévalo-López A
在“硬”高压条件下获得的致密亚稳定相可能包含不稳定性，例如不寻常的氧化态或配位环境，这些可被“软”低温化学部分消除。SrCrO2的合成。8(见图左)和SrCrO2。高压钙钛矿型SrCrO_3中的75个(右)相导致Cr4+周围的配位从八面体向四面体的驰豫。
Dense metastable phases obtained under" hard" high-pressure conditions may contain instabilities such as unusual oxidation states or coordination environments that may be partially relieved by" soft" low-temperature chemistry. The synthesis of SrCrO2. 8 (see picture, left) and SrCrO2. 75 (right) phases from the high-pressure perovskite SrCrO3 leads to a relaxation of the coordination around Cr4+ from octahedral to tetrahedral.