High-pressure and high-temperature synthesis of crystalline Sb<sub>3</sub>N<sub>5</sub>
- Author(s)
- Matteo Ceppatelli, Manuel Serrano-Ruiz, Marta Morana, Kamil Dziubek, Demetrio Scelta, Gaston Garbarino, Tomasz Poręba, Mohamed Mezouar, Roberto Bini, Maurizio Peruzzini
- Abstract
A chemical reaction between Sb and N2 was induced under high-pressure (32–35 GPa) and high-temperature (1600–2200 K) conditions, generated by a laser heated diamond anvil cell. The reaction product was identified by single crystal synchrotron X-ray diffraction at 35 GPa and room temperature as crystalline antimony nitride with Sb3N5 stoichiometry and structure belonging to orthorhombic space group Cmc21. Only Sb−N bonds are present in the covalent bonding framework, with two types of Sb atoms respectively forming SbN6 distorted octahedra and trigonal prisms and three types of N atoms forming NSb4 distorted tetrahedra and NSb3 trigonal pyramids. Taking into account two longer Sb−N distances, the SbN6 trigonal prisms can be depicted as SbN8 square antiprisms and the NSb3 trigonal pyramids as NSb4 distorted tetrahedra. The Sb3N5 structure can be described as an ordered stacking in the bc plane of bi- layers of SbN6 octahedra alternated to monolayers of SbN6 trigonal prisms (SbN8 square antiprisms). The discovery of Sb3N5 finally represents the long sought-after experimental evidence for Sb to form a crystalline nitride, providing new insights about fundamental aspects of pnictogens chemistry and opening new perspectives for the high-pressure chemistry of pnictogen nitrides and the synthesis of an entire class of new materials.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- European Laboratory for Non-Linear Spectroscopy (LENS), Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", CNR, University of Florence, European Synchrotron Radiation Facility ESRF
- Journal
- Angewandte Chemie - International Edition
- Volume
- 63
- No. of pages
- 11
- ISSN
- 1433-7851
- DOI
- https://doi.org/10.1002/anie.202319278
- Publication date
- 03-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105113 Crystallography, 105116 Mineralogy, 104003 Inorganic chemistry, 104011 Materials chemistry
- ASJC Scopus subject areas
- Catalysis, General Chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/5d1fcf1b-b87f-42de-8886-e19d9dc628db