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Issue 37, 2009
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Robust recognition of malonate and 2-amino-4-picolinium in conjunction with M(II) as a triad (M = Ni/Co/Mn): role of this highly stable hydrogen-bonded motif in driving supramolecular self-assembly

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Abstract

The crystal lattice of the three isostructural compounds 1–3, (C6H8N2H)2[M(C3H2O4)2(H2O)2]·4H2O (C6H8N2H = protonated 2-amino-4-picoline, M = Ni/Co/Mn, C3H4O4 = malonate dianion; hereafter, malonate) is formed by supramolecular 2D layers. Hydrogen-bonding, π⋯π and lone pair⋯π interactions play crucial role in organizing monomeric [MII(mal)2(H2O)2] units into 2D sheets along the ab plane, through the self-association between two different supramolecular building blocks, namely a tetrameric water cluster including metal-coordinated water molecules, and R22(8) and R22(7) hydrogen-bonded recognition synthons between 2-amino-4-picolinium and malonate. DFT calculations clearly show that the robust 2-amino-4-picolinium/malonate hydrogen-bonded motif drives the self-assembly of the supramolecular network observed.

Graphical abstract: Robust recognition of malonate and 2-amino-4-picolinium in conjunction with M(ii) as a triad (M = Ni/Co/Mn): role of this highly stable hydrogen-bonded motif in driving supramolecular self-assembly

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Publication details

The article was received on 12 Mar 2009, accepted on 12 Jun 2009 and first published on 20 Jul 2009


Article type: Paper
DOI: 10.1039/B905127A
Citation: Dalton Trans., 2009, 7617-7624
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    Robust recognition of malonate and 2-amino-4-picolinium in conjunction with M(II) as a triad (M = Ni/Co/Mn): role of this highly stable hydrogen-bonded motif in driving supramolecular self-assembly

    S. R. Choudhury, B. Dey, S. Das, A. Robertazzi, A. D. Jana, C. Chen, H. M. Lee, P. Gamez and S. Mukhopadhyay, Dalton Trans., 2009, 7617
    DOI: 10.1039/B905127A

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