High-pressure and high-temperature synthesis of crystalline Sb₃N₅

Autor(en)

Matteo Ceppatelli, Manuel Serrano-Ruiz, Marta Morana, Kamil Dziubek, Demetrio Scelta, Gaston Garbarino, Tomasz Poręba, Mohamed Mezouar, Roberto Bini, Maurizio Peruzzini

Abstrakt

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(en)

Institut für Mineralogie und Kristallographie

Externe Organisation(en)

European Laboratory for Non-Linear Spectroscopy (LENS), Consiglio Nazionale delle Ricerche, Università degli Studi di Firenze, European Synchrotron Radiation Facility ESRF

Journal

Angewandte Chemie - International Edition

Band

63

Anzahl der Seiten

11

ISSN

1433-7851

DOI

https://doi.org/10.1002/anie.202319278

Publikationsdatum

03-2024

Peer-reviewed

Ja

ÖFOS 2012

105113 Kristallographie, 105116 Mineralogie, 104003 Anorganische Chemie, 104011 Materialchemie

ASJC Scopus Sachgebiete

Catalysis, Allgemeine Chemie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5d1fcf1b-b87f-42de-8886-e19d9dc628db