1
|
Wandelt SL, Mutschke A, Khalyavin D, Steinadler J, Karttunen AJ, Schnick W. Ba 12 [BN 2 ] 6.67 H 4 : A Disordered Anti-Skutterudite filled with Nitridoborate Anions. Angew Chem Int Ed Engl 2024; 63:e202316469. [PMID: 38051820 DOI: 10.1002/anie.202316469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/07/2023]
Abstract
Skutterudites are of high interest in current research due to their diversity of structures comprising empty, partially filled and filled variants, mostly based on metallic compounds. We herein present Ba12 [BN2 ]6.67 H4 , forming a non-metallic filled anti-skutterudite. It is accessed in a solid-state ampoule reaction from barium subnitride, boron nitride and barium hydride at 750 °C. Single-crystal X-ray and neutron powder diffraction data allowed to elucidate the structure in the cubic space group Im3 ‾ ${\bar{3}}$ (no. 204). The barium and hydride atoms form a three-dimensional network consisting of corner-sharing HBa6 octahedra and Ba12 icosahedra. Slightly bent [BN2 ]3- units are located in the icosahedra and the voids in-between. 1 H and 11 B magic angle spinning (MAS) NMR experiments and vibrational spectroscopy further support the structure model. Quantum chemical calculations coincide well with experimental results and provide information about the electronic structure of Ba12 [BN2 ]6.67 H4 .
Collapse
Affiliation(s)
- Sophia L Wandelt
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
| | - Alexander Mutschke
- Chair of Inorganic Chemistry with Focus in Novel Materials, Department of Chemistry, TU Munich, Lichtenbergstr. 4, 85748, Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), TU Munich, Lichtenbergstr. 1, 85748, Garching, Germany
| | - Dmitry Khalyavin
- Rutherford Appleton Laboratory, ISIS Neutron and Muon Source, Didcot, OX11 0QX, UK
| | - Jennifer Steinadler
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
| | - Antti J Karttunen
- Department of Chemistry and Materials Science, Aalto University P.O. Box 16100, 00076, Aalto, Finland
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
| |
Collapse
|
2
|
Wandelt SL, Mutschke A, Khalyavin D, Calaminus R, Steinadler J, Lotsch BV, Schnick W. Combining Nitridoborates, Nitrides and Hydrides-Synthesis and Characterization of the Multianionic Sr 6 N[BN 2 ] 2 H 3. Angew Chem Int Ed Engl 2023; 62:e202313564. [PMID: 37905748 DOI: 10.1002/anie.202313564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/16/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
Multianionic metal hydrides, which exhibit a wide variety of physical properties and complex structures, have recently attracted growing interest. Here we present Sr6 N[BN2 ]2 H3 , prepared in a solid-state ampoule reaction at 800 °C, as the first combination of nitridoborate, nitride and hydride anions within a single compound. The crystal structure was solved from single-crystal X-ray and neutron powder diffraction data in space group P21 /c (no. 14), revealing a three-dimensional network of undulated layers of nitridoborate units, strontium atoms and hydride together with nitride anions. Magic angle spinning (MAS) NMR and vibrational spectroscopy in combination with quantum chemical calculations further confirm the structure model. Electrochemical measurements suggest the existence of hydride ion conductivity, allowing the hydrides to migrate along the layers.
Collapse
Affiliation(s)
- Sophia L Wandelt
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
| | - Alexander Mutschke
- Chair of Inorganic Chemistry with Focus in Novel Materials, Department of Chemistry, TU Munich, Lichtenbergstr. 4, 85748, Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), TU Munich, Lichtenbergstr. 1, 85748, Garching, Germany
| | - Dmitry Khalyavin
- Rutherford Appleton Laboratory, ISIS Neutron and Muon Source, Didcot, OX11 0QX, UK
| | - Robert Calaminus
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany
| | - Jennifer Steinadler
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
| | - Bettina V Lotsch
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, Munich, Germany
| |
Collapse
|