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DOI: 10.1039/A708189H (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 797-802

Hydrothermal synthesis and characterisation of alkaline-earth metal salts of benzene-1,3,5-tricarboxylic acid

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M. John Plater, Alexander J. Roberts, Jim Marr, Eric E. Lachowski and R. Alan Howie

Abstract

The reaction of MII acetate (M = Sr or Ba) with benzene-1,3,5-tricarboxylic acid (H3btc) yielded crystals of formulae [M(Hbtc)(H2O)2]·0.5H2O. These compounds are isostructural as shown by X-ray single-crystal analysis and by X-ray powder diffraction patterns. The structures consist of alternating layers of parallel Hbtc anions and cations stacked along the c axis. The metal ions are co-ordinated by two bidentate carboxylate groups, three monodentate carboxylate groups and two water molecules giving an overall co-ordination number of nine. Heating liberates 2.5 water molecules per formulae unit to give M(Hbtc) which can reversibly bind water reforming [M(Hbtc)(H2O)2]·0.5H2O.

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