Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure
The first nitridic analog of an amphibole mineral, the quaternary nitridosilicate phosphate Cr5.7Si2.3P8N24 was synthesized under high‐pressure high‐temperature conditions at 1400 °C and 12 GPa from the binary nitrides Cr2N, Si3N4 and P3N5, using NH4N3 and NH4F as additional nitrogen source and mine...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley, Gesellschaft Deutscher Chemiker
2024
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| Online Access: | https://repository.londonmet.ac.uk/9188/7/anie.202401421.pdf |
| _version_ | 1825625875088932864 |
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| author | Pointner, Monika M. Fisher, Katherine R. Weidemann, Martin Wolf, Florian Wright, Jonathan Bright, Eleanor Lawrence Giacobbe, Carlotta Oeckler, Oliver Schnick, Wolfgang |
| author_facet | Pointner, Monika M. Fisher, Katherine R. Weidemann, Martin Wolf, Florian Wright, Jonathan Bright, Eleanor Lawrence Giacobbe, Carlotta Oeckler, Oliver Schnick, Wolfgang |
| author_sort | Pointner, Monika M. |
| collection | LMU |
| description | The first nitridic analog of an amphibole mineral, the quaternary nitridosilicate phosphate Cr5.7Si2.3P8N24 was synthesized under high‐pressure high‐temperature conditions at 1400 °C and 12 GPa from the binary nitrides Cr2N, Si3N4 and P3N5, using NH4N3 and NH4F as additional nitrogen source and mineralizing agent, respectively. The crystal structure was elucidated by single‐crystal X‑ray diffraction with microfocused synchrotron radiation (C2/m, a = 9.6002(19), b = 17.107(3), c = 4.8530(10) Å, β = 109.65(3)°). The elemental composition was analyzed by energy dispersive X‐ray spectroscopy. The structure consists of vertex‐sharing PN4‐tetrahedra forming zweier double chains and edge‐sharing (Si,Cr)‐centered octahedra forming separated ribbons. Atomic resolution scanning transmission electron microscopy shows ordered Si and Cr sites next to a disordered Si/Cr site. Optical spectroscopy indicates a band gap of 2.1 eV. Susceptibility measurements show paramagnetic behavior and support the oxidation state Cr+IV, which is confirmed by EPR. The comprehensive analysis expands the field of Cr‐N chemistry and provides access to a nitride analog of one of the most prevalent silicate structures. |
| first_indexed | 2024-07-09T04:07:52Z |
| format | Article |
| id | oai:repository.londonmet.ac.uk:9188 |
| institution | London Metropolitan University |
| language | English |
| last_indexed | 2024-07-09T04:07:52Z |
| publishDate | 2024 |
| publisher | Wiley, Gesellschaft Deutscher Chemiker |
| record_format | eprints |
| spelling | oai:repository.londonmet.ac.uk:91882024-04-08T09:11:10Z https://repository.londonmet.ac.uk/9188/ Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure Pointner, Monika M. Fisher, Katherine R. Weidemann, Martin Wolf, Florian Wright, Jonathan Bright, Eleanor Lawrence Giacobbe, Carlotta Oeckler, Oliver Schnick, Wolfgang 540 Chemistry & allied sciences The first nitridic analog of an amphibole mineral, the quaternary nitridosilicate phosphate Cr5.7Si2.3P8N24 was synthesized under high‐pressure high‐temperature conditions at 1400 °C and 12 GPa from the binary nitrides Cr2N, Si3N4 and P3N5, using NH4N3 and NH4F as additional nitrogen source and mineralizing agent, respectively. The crystal structure was elucidated by single‐crystal X‑ray diffraction with microfocused synchrotron radiation (C2/m, a = 9.6002(19), b = 17.107(3), c = 4.8530(10) Å, β = 109.65(3)°). The elemental composition was analyzed by energy dispersive X‐ray spectroscopy. The structure consists of vertex‐sharing PN4‐tetrahedra forming zweier double chains and edge‐sharing (Si,Cr)‐centered octahedra forming separated ribbons. Atomic resolution scanning transmission electron microscopy shows ordered Si and Cr sites next to a disordered Si/Cr site. Optical spectroscopy indicates a band gap of 2.1 eV. Susceptibility measurements show paramagnetic behavior and support the oxidation state Cr+IV, which is confirmed by EPR. The comprehensive analysis expands the field of Cr‐N chemistry and provides access to a nitride analog of one of the most prevalent silicate structures. Wiley, Gesellschaft Deutscher Chemiker 2024-02-15 Article PeerReviewed text en cc_by_nc_nd_4 https://repository.londonmet.ac.uk/9188/7/anie.202401421.pdf Pointner, Monika M., Fisher, Katherine R., Weidemann, Martin, Wolf, Florian, Wright, Jonathan, Bright, Eleanor Lawrence, Giacobbe, Carlotta, Oeckler, Oliver and Schnick, Wolfgang (2024) Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure. Angewandte Chemie International Edition, 63 (14). pp. 1-6. ISSN 1433-7851 https://doi.org/10.1002/anie.202401421 10.1002/anie.202401421 10.1002/anie.202401421 |
| spellingShingle | 540 Chemistry & allied sciences Pointner, Monika M. Fisher, Katherine R. Weidemann, Martin Wolf, Florian Wright, Jonathan Bright, Eleanor Lawrence Giacobbe, Carlotta Oeckler, Oliver Schnick, Wolfgang Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure |
| title | Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure |
| title_full | Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure |
| title_fullStr | Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure |
| title_full_unstemmed | Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure |
| title_short | Cr5.7Si2.3P8N24 - a Chromium(+IV) Nitridosilicate Phosphate with Amphibole‐type structure |
| title_sort | cr5 7si2 3p8n24 a chromium iv nitridosilicate phosphate with amphibole type structure |
| topic | 540 Chemistry & allied sciences |
| url | https://repository.londonmet.ac.uk/9188/7/anie.202401421.pdf |
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