Synthesis, crystal structure solution and characterization of two organic-inorganic hybrid layered materials based on metal sulfates and 1,4-phenylenediamine

Abstract

Two organic-inorganic hybrid layered materials, namely poly[(μ-1,4-diaminobenzene-κ²N:N')[μ₃-sulfato(VI)-κ⁴O:O':O'',O''']manganese], [Mn(SO₄)(C₆H₈N₂)]_n, 1, and poly[(μ-1,4-diaminobenzene-κ²N:N')[μ₃-sulfato(VI)-κ⁴O:O':O'',O''']copper], [Cu(SO₄)(C₆H₈N₂)]_n, 2, have been synthesized using 1,4-phenylenediamine (PPD) as an organic template and component (linker). Both materials form three-dimensional frameworks. The crystal structures were determined using data from powder X-ray diffraction measurements. The purity and morphology of the compounds were studied by elemental analyses and SEM investigations, and their thermal stabilities were determined by thermogravimetric and nonambient powder X-ray diffraction measurements, which indicated that 1 is stable up to 537 K and 2 is stable up to 437 K.

Keywords: crystal structure; hybrid layered materials; non-ambient PXRD; powder X-ray diffraction; thermal decomposition studies.