Cooperative Crystallization of Heterometallic Indium–Chromium Metal–Organic Polyhedra and Their Fast Proton Conductivity1. Issue 27 (15th May 2015)

• Record Type: Journal Article
• Authors: Zhai, Quan‐Guo; Mao, Chengyu; Zhao, Xiang; Lin, Qipu; Bu, Fei; Chen, Xitong; Bu, Xianhui; Feng, Pingyun
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 27(2015)
• Page Start: 7886
• Page End: 7890
• Publication Date: 2015-05-15
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201503095
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Metal–organic polyhedra (MOPs) or frameworks (MOFs) based on Cr³⁺ are notoriously difficult to synthesize, especially as crystals large enough to be suitable for characterization of the structure or properties. It is now shown that the co‐existence of In³⁺ and Cr³⁺ induces a rapid crystal growth of large single crystals of heterometallic In‐Cr‐MOPs with the [M₈L₁₂] (M=In/Cr, L=dinegative 4, 5‐imidazole‐dicarboxylate) cubane‐like structure. With a high concentration of protons from 12 carboxyl groups decorating every edge of the cube and an extensive H‐bonded network between cubes and surrounding H₂O molecules, the newly synthesized In‐Cr‐MOPs exhibit an exceptionally high proton conductivity (up to 5.8×10⁻² S cm⁻¹ at 22.5 °C and 98 % relative humidity, single crystal).</p> </abstract>