Exploring conformationally flexible hydrogen-bond-functionalized ligand and counter anions in metal-organic frameworks of Cu(II)

Krishna Kumar, D. ; Das, Amitava ; Dastidar, Parthasarathi (2006) Exploring conformationally flexible hydrogen-bond-functionalized ligand and counter anions in metal-organic frameworks of Cu(II) New Journal of Chemistry, 30 . pp. 1267-1275. ISSN 1144-0546

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Official URL: http://pubs.rsc.org/en/content/articlelanding/2006...

Related URL: http://dx.doi.org/10.1039/B606150H

Abstract

Single crystal structures of six metal-organic frameworks (MOFs) derived from N,N'-bis(3-pyridyl)urea L1 and Cu(II) salts having different counter ions have been investigated to study the plausible role of conformationally flexible hydrogen-bond-functionalized ligand L1 and counter ions on the resultant topologies of the MOFs. The ligand adopts the energetically least stable syn-syn conformation in most of the MOFs. The 1 : 2 metal-ligand coordination polymers display looped chain topologies with square-pyramidal metal center whereas 1 : 1 metal-ligand coordination polymers show 1D zigzag infinite chain. Although the urea functionality of the ligand does recognize the anions via various N-H...O/F interactions, the counter anions do not influence the primary framework structures.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:59982
Deposited On:08 Sep 2011 10:20
Last Modified:08 Sep 2011 10:20

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