Reversible Transformation between Cubane and Stairstep Cu4I4 Clusters Using Heat or Solvent Vapor. Issue 4 (28th November 2014)

• Record Type: Journal Article
• Authors: Cho, Seonghwa; Jeon, Youngeun; Lee, Sangjin; Kim, Jineun; Kim, Tae Ho
• Is Part Of: Chemistry. Volume 21:Issue 4(2015)
• Page Start: 1439
• Page End: 1443
• Publication Date: 2014-11-28
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201405800
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The controlled self‐assembly of CuI and an asymmetric ligand with mixed N/S donors, 2‐(<italic>tert</italic>‐butylthio)‐<italic>N</italic>‐(pyridin‐3‐yl)acetamide (<bold>L</bold>), afforded three Cu^I coordination polymers (CPs), [Cu₄I₄<bold>L</bold>₂(MeCN)₂]_{<italic>n</italic>} (<bold>1</bold>), [Cu₄I₄<bold>L</bold>₂]_{<italic>n</italic>} (<bold>2</bold>), and {[Cu₄I₄<bold>L</bold>₂]<bold>⋅</bold>MeOH}_{<italic>n</italic>} (<bold>3</bold>). X‐ray analyses showed that CPs <bold>1</bold>–<bold>3</bold> are supramolecular isomers with 1, 2, and 3D structures, respectively. CP <bold>1</bold> adopts a stairstep Cu₄I₄ cluster, whereas CPs <bold>2</bold> and <bold>3</bold> are composed of cubane‐like Cu₄I₄ clusters. Crystal‐to‐crystal transformations of <bold>1</bold> to <bold>2</bold> and <bold>3</bold> showed reversible transformations between different Cu₄I₄ clusters using heat or solvent (acetonitrile or methanol) vapor. CP <bold>2</bold> was reversibly transformed to <bold>3</bold> by the addition of methanol and heat. Therefore, the transformations between supramolecular isomers <bold>1</bold>, <bold>2</bold>, and <bold>3</bold> are completely reversible.</p> </abstract>