AI Article Synopsis
- Researchers studied the La-poor section of the La-Ni-Si ternary system, leading to the discovery of four new polar intermetallic compounds.
- The compounds exhibit various structures, including diamond-like frameworks and homoatomic/homopolyhedral arrangements, emphasizing the unique characteristics of each type.
- The study concludes that the similar sizes and electronegativities of nickel (Ni) and silicon (Si) atoms contribute to the rich diversity of compositions and structures found in these materials.
Article Abstract
The La-poor part of the ternary La-Ni-Si system has been explored leading to the discovery and structural characterization of four new polar intermetallic compounds. LaNiSi [BaAuGa type, 64, space group , = 7.8223(7) Å, = 6.3894(6) Å, = 17.843(2) Å, = 891.8(2) Å, = 8] features a diamond (lonsdaleite)-like homoatomic Ni framework and is the first Ni representative of a larger family of compounds typically formed by aurides. LaNiSi [EuNiSi type, 52, 4/, = 10.0278(3) Å, = 7.5047(4) Å, = 754.65(6) Å, = 4] is characterized by homoatomic Ni tetrahedra and rectangles. LaNiSi [SrNiP type, 36, , = 3.722(2) Å, = 11.759(5) Å, = 11.622(3) Å, = 508.7(3) Å, = 4] is governed by extensive heteroatomic bonding and characterized by homopolyhedral packing. LaNiSi [CeNiSi type, 36, 2/, = 15.819(1) Å, = 6.0068(5) Å, = 7.4918(6) Å, β = 103.163(5)°, = 693.17(10) Å, = 4] is a new member of homologous series that includes LaNiSi and LaNiSi. We conclude that the similar radii and electronegativities of Ni and Si are the reason for the incredible diversity of compositions and structures in this system.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11615943 | PMC |
| http://dx.doi.org/10.1021/acs.inorgchem.4c03560 | DOI Listing |
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