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114th General Meeting of Korean Chemical Society Reversible Transformation between Cubane and Stairstep Cu4I4 Clusters Using Heat or Solvent Vapor

Submission Date :
8 / 28 / 2014 , 13 : 59 : 09
Abstract Number :
114082809278
Presenting Type:
Poster Presentation
Presenting Area :
무기화학
Authors :
조성화, 이상진, 전영은, 강기행, 김태호*, 김진은*
경상대학교 화학과, Korea
Assigned Code :
INOR.P-209 Assigend Code Guideline
Presenting Time :
10월 15일 (수요일) 16:00~19:00
The controlled self-assembly of CuI and an asymmetric ligand with mixed N/S donors, 2-(tert-butylthio)-N-(pyridin-3-yl)acetamide (L), afforded three CuI coordination polymers (CPs), [Cu4I4L2(MeCN)2]n (1), [Cu4I4L2]n (2), and {[Cu4I4L2]·MeOH}n (3). X-ray analyses showed that CPs 1-3 are supramolecular isomers with one-, two-, and three-dimensional structures, respectively. CP 1 adopts a stairstep Cu4I4 cluster, whereas CPs 2 and 3 are composed of cubane-like Cu4I4 clusters. Crystal-to-crystal transformations of 1 to 2 and 3 showed reversible transformations between different Cu4I4 clusters using heat or solvent (acetonitrile or methanol) vapor. CP 2 was reversibly transformed to 3 by the addition of methanol and heat. Therefore, the transformations between supramolecular isomers 1, 2, and 3 are completely reversible.