Issue 42, 2015

Selective gelation of N-(4-pyridyl)nicotinamide by copper(ii) salts


We report the selective gelation properties of the copper(II) complexes of N-(4-pyridyl)nicotinamide (4PNA). The morphology of the xerogels was examined by scanning electron microscopy (SEM). The correlation between the X-ray powder diffraction (XRPD) pattern of the xerogels and the single crystal structure of the copper(II) acetate complex suggests that the single crystal X-ray data represent a good structural model for the gel fibers, and that gelation arises from the presence of a 1D hydrogen-bonded chain between gelator amide groups and coordinated anions, while the presence of strongly bound water in non-gelator systems results in the formation of more extensively hydrogen-bonded crystalline networks. The selective gelation of all the copper(II) salts compared to the other metal salts may be attributed to the Jahn–Teller distorted nature of copper(II), which weakens water binding in all copper(II) salts.

Graphical abstract: Selective gelation of N-(4-pyridyl)nicotinamide by copper(ii) salts

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Article information

Article type
07 May 2015
18 Aug 2015
First published
18 Aug 2015
This article is Open Access
Creative Commons BY license

CrystEngComm, 2015,17, 8130-8138

Author version available

Selective gelation of N-(4-pyridyl)nicotinamide by copper(II) salts

D. Ghosh, I. Lebedytė, D. S. Yufit, K. K. Damodaran and J. W. Steed, CrystEngComm, 2015, 17, 8130 DOI: 10.1039/C5CE00901D

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