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Issue 14, 2012
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Supramolecular isomers of metal–organic frameworks: the role of a new mixed donor imidazolate-carboxylate tetradentate ligand

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Abstract

Five new metal–organic frameworks prepared from the ligand 5-bis(3-(1-imidazolyl)propylcarbamoyl)terephthalate (bipta2−) and transition metal salts, Zn2+ (1), Co2+ (2), Mn2+ (3, 4) and Cu2+ (5), are reported. Single crystal X-ray studies reveal that the bipta2− ligand acts as a tetradentate ligand and combines with four-coordinate cationic metal nodes to give four-connected framework structures. Whilst reaction of bipta2− with Zn(II) gives rise to a framework of diamondoid topology 1, the analogous frameworks with Co(II), Mn(II) and Cu(II) afford frameworks that incorporate square-planar nodes. Whereas 2 and 5 form frameworks of Cd(SO4) (cds) and square 44 nets (sql), respectively, reaction of Mn(II) with bipta2− forms two supramolecular isomers of topology cds for 3 and sql for 4.

Graphical abstract: Supramolecular isomers of metal–organic frameworks: the role of a new mixed donor imidazolate-carboxylate tetradentate ligand

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Article information


Submitted
28 Oct 2011
Accepted
05 Jan 2012
First published
03 Feb 2012

Dalton Trans., 2012,41, 4020-4026
Article type
Paper

Supramolecular isomers of metal–organic frameworks: the role of a new mixed donor imidazolate-carboxylate tetradentate ligand

V. J. Richards, S. P. Argent, A. Kewley, A. J. Blake, W. Lewis and N. R. Champness, Dalton Trans., 2012, 41, 4020
DOI: 10.1039/C2DT12055K

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