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Issue 11, 2004
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Hydrothermal synthesis and magnetic properties of novel Mn(II) and Zn(II) materials with thiolato-carboxylate donor ligand frameworks

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Abstract

The hydrothermal reaction of thiosalicylic acid, (C6H4(CO2H)(SH)-1,2) with manganese(III) acetate leads to formation of the coordination solid [Mn5((C6H4(CO2)(S)-1,2)2)43-OH)2] (1) via a redox reaction, where resulting manganese(II) centres are coordinated by oxygen donor atoms and S–S disulfide bridge formation is simultaneously observed. Reaction of the same ligand under similar conditions with zinc(II) chloride yields the layered coordination solid [Zn(C6H4(CO2)(S)-1,2)] (2). Hydrothermal treatment of manganese(III) acetate with 2-mercaptonicotinic acid, (NC5H3(SH)(CO2H)-2,3) was found to produce the 1-dimensional chain structure [Mn2((NC5H3(S)(CO2)-2,3)2)2(OH2)4]·4H2O (3) which also exhibits disulfide bridge formation and oxygen-only metal interactions. Compound 3 has been studied by thermogravimetric analysis and indicates sequential loss of lattice and coordinated water, prior to more comprehensive ligand fragmentation at elevated temperatures. The magnetic behaviour of 1 and 3 has been investigated and both exhibit antiferromagnetic interactions. The magnetic behaviour of 1 has been modelled as two corner-sharing isosceles triangles whilst 3 has been modelled as a 1-dimensional chain.

Graphical abstract: Hydrothermal synthesis and magnetic properties of novel Mn(ii) and Zn(ii) materials with thiolato-carboxylate donor ligand frameworks

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Publication details

The article was received on 11 Feb 2004, accepted on 13 Apr 2004 and first published on 06 May 2004


Article type: Paper
DOI: 10.1039/B401887G
Citation: Dalton Trans., 2004,0, 1670-1678
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    Hydrothermal synthesis and magnetic properties of novel Mn(II) and Zn(II) materials with thiolato-carboxylate donor ligand frameworks

    S. M. Humphrey, R. A. Mole, J. M. Rawson and P. T. Wood, Dalton Trans., 2004, 0, 1670
    DOI: 10.1039/B401887G

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