Selective Metal Cation Capture by Soft Anionic Metal鈥揙rganic Frameworks via Drastic Single-Crystal-to-Single-Crystal Transformations

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• 作者：Jian Tian ; Laxmikant V. Saraf ; Birgit Schwenzer ; Stephanie M. Taylor ; Euan K. Brechin ; Jun Liu ; Scott J. Dalgarno ; Praveen K. Thallapally
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：June 13, 2012
• 年：2012
• 卷：134
• 期：23
• 页码：9581-9584
• 全文大小：278K
• 年卷期：v.134,no.23(June 13, 2012)
• ISSN：1520-5126

文摘

Flexible anionic metal鈥搊rganic frameworks (MOFs) are transformed into neutral heterobimetallic systems via single-crystal-to-single-crystal processes invoked by cation insertion. These transformations are directed by cooperative bond breakage and formation, resulting in expansion or contraction of the 3D framework by up to 33% due to the flexible nature of the organic linker. These MOFs displays highly selective uptake of divalent transition-metal cations (e.g., Co²⁺ and Ni²⁺) over alkali-metal cations (Li⁺ and Na⁺).