Synthesis and structural characterization of four new organically-directed bismuth sulfates

Abstract

Four new organically-directed bismuth sulfates, (C₂N₂H₁₀)₃[Bi₂(SO₄)₆(H₂O)₂]·4H₂O (I), (C₅N₂H₁₄)[Bi(SO₄)₂(HSO₄)(H₂O)]·H₂O (II), (C₄N₃H₁₆)[Bi(SO₄)₃(H₂O)] (III) and (C₆N₄H₂₂)[Bi₂(SO₄)₅(H₂O)₂]·4H₂O (IV) have been synthesized and structurally characterized by single-crystal X-ray diffraction analysis. Four compounds were constructed from strictly alternating BiO_n and SO₄ polyhedra. I and II both exhibit similar infinite courrgated anionic layers with 8-membered ring windows, III shows a new 1D ladder-like chain containing 4-membered rings, while IV possesses a new flat layer with 12-membered ring windows. The diverse linking fashions of the five-connected Bi nodes and the mono-, bi- or tri-connected S nodes form unique Bi–S–Bi topologies. Their fluorescent properties are also reported.