Synthesis, structure and optoelectronic properties of hybrid iodobismuthate & iodoantimonate semiconducting materials.

The syntheses and structures of five iodobismuthate and nine iodoantimonate hybrid materials are presented. The 1,3-dimethyl-2-oxo-2,3-dihydropyrimidinium cation has been used to template the isostructural, one-dimensional [CHNO][SbI] (I) and [CHNO][BiI] (II), while 4-methylmorpholinium templates the compounds, [CHNO][SbI] (III) and [CHNO][BiI] (IV), both containing isolated iodopnictogenide cluster anions. Five iodoantimonate compounds, templated by piperazinium cation derivatives, have been synthesised; [CHN][SbI]·4HO (V), [CHN][SbI]·3HO (VI), two polymorphs of [CHN][SbI]·2HO (VII and VIII) and [CHN][SbI]·HO (IX), mainly adopting structures closely related to previously published 1D iodobismuthate hybrid materials.

Synthesis and structure of pseudo-three dimensional hybrid iodobismuthate semiconductors.

The synthesis, structures and semiconducting properties of three isostructural, piperazinium-cation based iodobismuthates, [NH(CH)NH][BiI]·4HO, [CHNH(CH)NH][BiI]·3HO and [CHNH(CH)HNCH][BiI]·2HO, are reported. The materials have pseudo-three dimensional structures consisting of infinite chains formed from edge/face sharing [BiI] octahedra with short interchain II interactions of <3.8 Å.