Jump to main content
Jump to site search

Issue 19, 2011
Previous Article Next Article

Structural and magnetic properties of three novel complexes with the versatile ligand 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one

Author affiliations

Abstract

Conventional reactions of the versatile multidentate ligand 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one (HmtpO) with metallic(II) salts lead to three novel multidimensional complexes [Cu(HmtpO)2(H2O)3](ClO4)2·H2O (1), {[Cu(HmtpO)2(H2O)2](ClO4)2·2HmtpO}n (2) and {[Co(HmtpO)(H2O)3](ClO4)2·2H2O}n (3). In each compound, the triazolopyrimidine ligand shows a different and unusual coordination mode, giving rise to structures with diverse topologies and dimensionality. Compound 1 is a monomeric complex, in which HmtpO shows both N3-monodentate and N1,O71-bidentate modes. 2 is a bidimensional framework with the ligand showing a N3,O71 bidentate-bridging mode. The structure of 3 consists of 1D chains, in which HmtpO displays a N1,N3,O71-tridentate-bridging mode. It should be noted that these coordination modes of the HmtpO ligand are unique in the case of compounds 2 and 3. On the other hand, the magnetic properties of the polynuclear complexes 2 and 3 have been studied showing weak ferromagnetic and antiferromagnetic behaviour, respectively.

Graphical abstract: Structural and magnetic properties of three novel complexes with the versatile ligand 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Oct 2010, accepted on 11 Feb 2011 and first published on 11 Apr 2011


Article type: Paper
DOI: 10.1039/C0DT01416H
Citation: Dalton Trans., 2011,40, 5180-5187
  •   Request permissions

    Structural and magnetic properties of three novel complexes with the versatile ligand 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one

    A. B. Caballero, A. Rodríguez-Diéguez, L. Lezama, E. Barea and J. M. Salas, Dalton Trans., 2011, 40, 5180
    DOI: 10.1039/C0DT01416H

Search articles by author

Spotlight

Advertisements