3Pb 8 O 7 I 2 ·2CsI: the salt-inclusion strategy enriches the structural chemistry in lead oxyhalides

The design and synthesis of new mid-infrared functional crystals with novel structures and excellent properties is a hot topic in the materials science research field. Different from the traditional mid-far infrared crystal systems, such as chalcogenides and phosphides, a recently developed heavy me...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2025-01, Vol.54 (4), p.1370-1376
Main Authors: Maimaiti, Mayinuer, Yan, Yuchen, Wu, Jinche, Han, Tingwen, Xie, Jing, Zhang, Min
Format: Article
Language:English
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Summary:The design and synthesis of new mid-infrared functional crystals with novel structures and excellent properties is a hot topic in the materials science research field. Different from the traditional mid-far infrared crystal systems, such as chalcogenides and phosphides, a recently developed heavy metal oxyhalide, with a wide bandgap and transmittance range, is a very promising mid-infrared crystal material research system. Herein, the first case of a salt-inclusion compound in lead oxyhalides, Cs Pb O I (3Pb O I ·2CsI), has been synthesized by a high-temperature solution method. Cs Pb O I features a "rod-like chain" structure constructed from [Pb O ] composed of [OPb ] tetrahedra, [OPb ] pyramids, and 1∞[CsI ] chains inserted in the tunnel. The results show that the salt-inclusion strategy significantly enriches the structural diversity of lead oxyhalides and provides a new research idea for exploring new infrared functional materials.
ISSN:1477-9226
1477-9234
DOI:10.1039/d4dt03212h