Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2).
The alkaline earth silicon nitrides AESiN(2) (AE = Ca, Sr, Ba) are reported, synthesized as clear, colorless, single crystals from molten sodium at 900-1100 degrees C or, in the cases of BaSiN(2) and SrSiN(2), as white powders by reacting powdered intermetallics AESi with flowing anhydrous ammonia a...
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| Format: | Journal article |
| Language: | English |
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2004
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| _version_ | 1797094866550784000 |
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| author | Gál, Z Mallinson, P Orchard, H Clarke, S |
| author_facet | Gál, Z Mallinson, P Orchard, H Clarke, S |
| author_sort | Gál, Z |
| collection | OXFORD |
| description | The alkaline earth silicon nitrides AESiN(2) (AE = Ca, Sr, Ba) are reported, synthesized as clear, colorless, single crystals from molten sodium at 900-1100 degrees C or, in the cases of BaSiN(2) and SrSiN(2), as white powders by reacting powdered intermetallics AESi with flowing anhydrous ammonia at 550-1000 degrees C. Structures were determined from single-crystal X-ray diffraction measurements at 150 K: BaSiN(2) crystallizes in space group Cmca (No. 64) with a = 5.6046(1) A, b = 11.3605(3) A, c = 7.5851(2) A, and Z = 8. The structure consists of pairs of SiN(4) tetrahedra edge-linked to form bow-tie-shaped Si(2)N(6) dimers which share vertexes to form layers and has no analogue in oxide chemistry. SrSiN(2) has a distorted form of this structure (SrSiN(2): space group P2(1)/c (No. 14), a = 5.9750(5) A, b = 7.2826(7) A, c = 5.4969(4) A, beta = 113.496(4) degrees, Z = 4). The structure of CaSiN(2) contains only vertex-sharing SiN(4) tetrahedra, linked to form a three-dimensional stuffed-cristobalite type framework isostructural with KGaO(2) (CaSiN(2): space group Pbca (No. 61), a = 5.1229(3) A, b = 10.2074(6) A, c = 14.8233(9) A, Z = 16). |
| first_indexed | 2024-03-07T04:19:53Z |
| format | Journal article |
| id | oxford-uuid:caac495f-3be0-417f-ae7a-0d73c54c99db |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:19:53Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:caac495f-3be0-417f-ae7a-0d73c54c99db2022-03-27T07:09:01ZSynthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2).Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:caac495f-3be0-417f-ae7a-0d73c54c99dbEnglishSymplectic Elements at Oxford2004Gál, ZMallinson, POrchard, HClarke, SThe alkaline earth silicon nitrides AESiN(2) (AE = Ca, Sr, Ba) are reported, synthesized as clear, colorless, single crystals from molten sodium at 900-1100 degrees C or, in the cases of BaSiN(2) and SrSiN(2), as white powders by reacting powdered intermetallics AESi with flowing anhydrous ammonia at 550-1000 degrees C. Structures were determined from single-crystal X-ray diffraction measurements at 150 K: BaSiN(2) crystallizes in space group Cmca (No. 64) with a = 5.6046(1) A, b = 11.3605(3) A, c = 7.5851(2) A, and Z = 8. The structure consists of pairs of SiN(4) tetrahedra edge-linked to form bow-tie-shaped Si(2)N(6) dimers which share vertexes to form layers and has no analogue in oxide chemistry. SrSiN(2) has a distorted form of this structure (SrSiN(2): space group P2(1)/c (No. 14), a = 5.9750(5) A, b = 7.2826(7) A, c = 5.4969(4) A, beta = 113.496(4) degrees, Z = 4). The structure of CaSiN(2) contains only vertex-sharing SiN(4) tetrahedra, linked to form a three-dimensional stuffed-cristobalite type framework isostructural with KGaO(2) (CaSiN(2): space group Pbca (No. 61), a = 5.1229(3) A, b = 10.2074(6) A, c = 14.8233(9) A, Z = 16). |
| spellingShingle | Gál, Z Mallinson, P Orchard, H Clarke, S Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2). |
| title | Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2). |
| title_full | Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2). |
| title_fullStr | Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2). |
| title_full_unstemmed | Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2). |
| title_short | Synthesis and structure of alkaline earth silicon nitrides: BaSiN(2), SrSiN(2), and CaSiN(2). |
| title_sort | synthesis and structure of alkaline earth silicon nitrides basin 2 srsin 2 and casin 2 |
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