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镧镍硅：一座蕴含钻石的金矿。

La-Ni-Si: A Gold Mine with a Diamond.

作者信息

Smetana Volodymyr, Grilli Davide, Shtender Vitalii, Pani Marcella, Manfrinetti Pietro, Mudring Anja-Verena

机构信息

intelligent Advanced Materials, Department of Biological and Chemical Engineering and iNANO, Aarhus University, 8000 Aarhus C, Denmark.

Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691, Sweden.

出版信息

Inorg Chem. 2024 Dec 2;63(48):22761-22770. doi: 10.1021/acs.inorgchem.4c03560. Epub 2024 Nov 18.

DOI:10.1021/acs.inorgchem.4c03560
PMID:39556881
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11615943/
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.

摘要

对三元La-Ni-Si体系中贫La部分进行了探索，发现并对四种新型极性金属间化合物进行了结构表征。LaNiSi [BaAuGa型，64，空间群， = 7.8223(7) Å， = 6.3894(6) Å， = 17.843(2) Å， = 891.8(2) Å， = 8]具有类金刚石（六方金刚石）状的同原子Ni骨架，是通常由金化物形成的较大化合物家族中的首个Ni代表物。LaNiSi [EuNiSi型，52，4/， = 10.0278(3) Å， = 7.5047(4) Å， = 754.65(6) Å， = 4]的特征是同原子Ni四面体和矩形。LaNiSi [SrNiP型，36， ， = 3.722(2) Å， = 11.759(5) Å， = 11.622(3) Å， = 508.7(3) Å， = 4]受广泛的异原子键控制，其特征是同多面体堆积。LaNiSi [CeNiSi型，36，2/， = 15.819(1) Å， = 6.0068(5) Å， = 7.4918(6) Å，β = 103.163(5)°， = 693.17(10) Å， = 4]是包括LaNiSi和LaNiSi在内的同系物系列的新成员。我们得出结论，Ni和Si相似的半径和电负性是该体系中组成和结构令人难以置信的多样性的原因。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/a616cbb010db/ic4c03560_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/3b1657eb8b14/ic4c03560_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/277efc586e55/ic4c03560_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/3be2574d5e30/ic4c03560_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/bf3de5091071/ic4c03560_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/2b642e5a0457/ic4c03560_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/2a2cfa8f030a/ic4c03560_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/a616cbb010db/ic4c03560_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/3b1657eb8b14/ic4c03560_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/277efc586e55/ic4c03560_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/3be2574d5e30/ic4c03560_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/bf3de5091071/ic4c03560_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/2b642e5a0457/ic4c03560_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/2a2cfa8f030a/ic4c03560_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ced/11615943/a616cbb010db/ic4c03560_0007.jpg

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