A mixed-anion compound based upon a [Pb <sub>4</sub> O <sub>4</sub> ] heterocubane unit: synthesis, structure and electronic properties of Pb <sub>8</sub> O <sub>4</sub> I <sub>6</sub> (CN <sub>2</sub> )
The present study reports the synthesis, crystal structure, and electronic properties of the lead-oxide-iodide-carbodiimde Pb<sub>8</sub>O<sub>4</sub>I<sub>6</sub>(CN<sub>2</sub>). The n-type semiconducting compound was obtained <i>via</i> ceramic method from PbI<sub>2</sub>, PbO and Pb(CN<sub>2</sub>), yielding an air stable, dark yellow crystalline material. Single-crystal X-ray diffraction revealed the monoclinic space group <i>C</i>2/<i>c</i> featuring a heterocubane-type [Pb<sub>4</sub>O<sub>4</sub>] motif interconnected by iodide bridges and (NCN)<sup>2-</sup> units. The optical properties were characterized by diffuse reflectance UV-Vis spectroscopy, Mott-Schottky analysis, and photoluminescence spectroscopy, providing insights into the electronic structure.
Authors
- Markus Ströbele (ORCID: https://orcid.org/0000-0002-5147-5677)
- Adam Slabon (ORCID: https://orcid.org/0000-0002-4452-1831)
- Thomas Jüstel (ORCID: https://orcid.org/0000-0002-9455-5044)
- Hans‐Jürgen Meyer (ORCID: https://orcid.org/0000-0003-2450-4011)
- David Enseling (ORCID: https://orcid.org/0000-0003-3664-5364)
- Albert T. Schwarz (ORCID: https://orcid.org/0009-0008-8827-2022)
- Nele Petersen (ORCID: https://orcid.org/0009-0000-8697-1833)
Institutions
- University of Wuppertal (DE)
- Institute of Inorganic Chemistry of the Slovak Academy of Sciences (SK)
- FH Münster University of Applied Sciences (DE)
- University of Tübingen (DE)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5dt01979f
- Citations
- 1
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Deutsche Forschungsgemeinschaft