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MDPI, Molecules, 7(20), p. 12341-12363, 2015

DOI: 10.3390/molecules200712341

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Multidimensional Transition Metal Complexes Based on 3-Amino-1H-1,2,4-triazole-5-carboxylic Acid: From Discrete Mononuclear Complexes to Layered Materials

Journal article published in 2015 by Bing Liu, José A. Fernandes, João P. C. Tomé ORCID, Filipe A. Almeida Paz, Filipe Paz, Luís Cunha-Silva ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The synthesis and structural characterization of five transition metal complexes with different dimensionality and incorporating residues of 3-amino-1H-1,2,4-triazole-5-carboxylic acid (H(2)atrc) is reported: [Zn(Hatrc)(2)(H2O)] (1), [Mn(Hatrc)(2)(H2O)(2)]center dot 2H(2)O (2), [Fe-2(Hatrc)(4)(OH)(2)]center dot 6H(2)O (3), [Cd(Hatrc)(2)(H2O)](n) (4), and [Mn(atrc)(H2O)](n)center dot nH(2)O (5). These materials could be prepared from solution (1-3), diffusion (4), or hydrothermal reactions (5) with various anions and L:M ratios. Structural details were revealed by single crystal X-ray diffraction. The discrete units composing compounds 1-3, the polymeric 1D chain of 4 and the 2D layer of 5 are further extended into 3D supramolecular architectures through the formation of hydrogen bonds.