In:
Australian Journal of Chemistry, CSIRO Publishing, Vol. 60, No. 8 ( 2007), p. 595-
Abstract:
Two new organically templated lead(ii) iodide complexes, [(nbq)(PbI3)]n 1 and {[(CH3)3NC2H4N(CH3)3] 3(Pb6I18)}n 2, have been synthesized in the presence of aromatic and aliphatic quaternary ammonium compounds, N-(n-butyl)quinolinium (nbq+) and [(CH3)3NC2H4N(CH3)3]2+, respectively, acting as structure-directing agents. Both 1 and 2 consist of uncoordinated structure-directing agents and inorganic moieties bound to the organic structure-directing agents. In 1, an inorganic (PbI3–)n one-dimensional polyanion chain is built up by face-sharing of distorted PbI6 tetrahedra. The inorganic framework of 2 presents a two-dimensional arrangement that could be discussed in terms of [Pb3I10] 4– building blocks. Static attractive interactions between organic countercations and inorganic moieties were revealed through the crystal packing. Density functional theory calculations indicate that 1 possesses semiconductor properties, tuned by the π-electrons of nbq+. In contrast, 2 is conductive in the direction of aliphatic quaternary ammonium moiety.
Type of Medium:
Online Resource
ISSN:
0004-9425
Language:
English
Publisher:
CSIRO Publishing
Publication Date:
2007
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