In this study, we successfully synthesize cationic/neutral/anionic inverse-Hofmann-type spin crossover (SCO) frameworks with 1,1,2,2-tetrakis(4-(pyridine-4-yl)phenyl)-ethene ligand by means of cyanometallic charge engineering strategy. The cationic and neutral frameworks exhibit single-step thermally induced spin transition behaviors, while the SCO capability of anionic framework can be aroused by partial desolvation. This strategy provides a new idea to construct ionic SCO frameworks and extends the toolkit for SCO materials.

中文翻译：

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自旋交叉金属有机框架中的氰基金属电荷工程

在本研究中，我们通过以下方法成功合成了具有1,1,2,2-四(4-(吡啶-4-基)苯基)-乙烯配体的阳离子/中性/阴离子反霍夫曼型自旋交叉(SCO)框架氰基金属装料工程策略。阳离子和中性骨架表现出单步热诱导自旋跃迁行为，而阴离子骨架的SCO能力可以通过部分去溶剂化来激发。该策略为构建离子SCO框架提供了新的思路，并扩展了SCO材料的工具包。