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A family of lead clusters with precious metal cores

Gold nanoparticles have been used for centuries, both for decoration and in medical applications. More recently, many of the major advances in cluster chemistry have involved well-defined clusters containing tens or hundreds of atoms, either with or without a ligand shell. In this paper we report th...

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Autores principales: Shu, Cong-Cong, Morgan, Harry W. T., Qiao, Lei, McGrady, John E., Sun, Zhong-Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7351731/
https://www.ncbi.nlm.nih.gov/pubmed/32651376
http://dx.doi.org/10.1038/s41467-020-17187-4
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author Shu, Cong-Cong
Morgan, Harry W. T.
Qiao, Lei
McGrady, John E.
Sun, Zhong-Ming
author_facet Shu, Cong-Cong
Morgan, Harry W. T.
Qiao, Lei
McGrady, John E.
Sun, Zhong-Ming
author_sort Shu, Cong-Cong
collection PubMed
description Gold nanoparticles have been used for centuries, both for decoration and in medical applications. More recently, many of the major advances in cluster chemistry have involved well-defined clusters containing tens or hundreds of atoms, either with or without a ligand shell. In this paper we report the synthesis of two gold/lead clusters, [Au(8)Pb(33)](6−) and [Au(12)Pb(44)](8−), both of which contain nido [Au@Pb(11)](3−) icosahedra surrounding a core of Au atoms. Analogues of these large clusters are not found in the corresponding Ag chemistry: instead, the Ag-centered nido icosahedron, [Ag@Pb(11)](3−), is the only isolated product. The structural chemistry, along with the mass spectrometry which shows the existence of [Au(2)Pb(11)](2−) but not [Ag(2)Pb(11)](2−), leads us to propose that the former species is the key intermediate in the growth of the larger clusters. Density functional theory indicates that secondary π-type interactions between the [Au@Pb(11)](3−) ligands and the gold core play a significant part in stabilizing the larger clusters.
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spelling pubmed-73517312020-07-13 A family of lead clusters with precious metal cores Shu, Cong-Cong Morgan, Harry W. T. Qiao, Lei McGrady, John E. Sun, Zhong-Ming Nat Commun Article Gold nanoparticles have been used for centuries, both for decoration and in medical applications. More recently, many of the major advances in cluster chemistry have involved well-defined clusters containing tens or hundreds of atoms, either with or without a ligand shell. In this paper we report the synthesis of two gold/lead clusters, [Au(8)Pb(33)](6−) and [Au(12)Pb(44)](8−), both of which contain nido [Au@Pb(11)](3−) icosahedra surrounding a core of Au atoms. Analogues of these large clusters are not found in the corresponding Ag chemistry: instead, the Ag-centered nido icosahedron, [Ag@Pb(11)](3−), is the only isolated product. The structural chemistry, along with the mass spectrometry which shows the existence of [Au(2)Pb(11)](2−) but not [Ag(2)Pb(11)](2−), leads us to propose that the former species is the key intermediate in the growth of the larger clusters. Density functional theory indicates that secondary π-type interactions between the [Au@Pb(11)](3−) ligands and the gold core play a significant part in stabilizing the larger clusters. Nature Publishing Group UK 2020-07-10 /pmc/articles/PMC7351731/ /pubmed/32651376 http://dx.doi.org/10.1038/s41467-020-17187-4 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shu, Cong-Cong
Morgan, Harry W. T.
Qiao, Lei
McGrady, John E.
Sun, Zhong-Ming
A family of lead clusters with precious metal cores
title A family of lead clusters with precious metal cores
title_full A family of lead clusters with precious metal cores
title_fullStr A family of lead clusters with precious metal cores
title_full_unstemmed A family of lead clusters with precious metal cores
title_short A family of lead clusters with precious metal cores
title_sort family of lead clusters with precious metal cores
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7351731/
https://www.ncbi.nlm.nih.gov/pubmed/32651376
http://dx.doi.org/10.1038/s41467-020-17187-4
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