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

Ghosh, Dipankar and Lebedytė, Ieva and Yufit, Dmitry S. and Damodaran, Krishna K. and Steed, Jonathan W. (2015) 'Selective gelation of N-(4-pyridyl)nicotinamide by copper(II) salts.', CrystEngComm., 17 (42). pp. 8130-8138.


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.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Date accepted:18 August 2015
Date deposited:05 October 2015
Date of first online publication:November 2015
Date first made open access:18 August 2016

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