Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †

We report here the synthesis and characterization of two endohedral Zintl-ion clusters, [Fe4Sn18]4− and [Fe4Pb18]4−, which contain rhombic Fe4 cores. The Fe–Fe bond lengths are all below 2.5 Å, distinctly shorter than in the corresponding Cu clusters, indicating the presence of Fe–Fe bonding. Subtle...

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Main Authors: Chen, W, Li, Z, Morgan, HWT, Shu, C, Sun, Z, McGrady, JE
Format: Journal article
Language:English
Published: Royal Society of Chemistry 2024
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author Chen, W
Li, Z
Morgan, HWT
Shu, C
Sun, Z
McGrady, JE
author_facet Chen, W
Li, Z
Morgan, HWT
Shu, C
Sun, Z
McGrady, JE
author_sort Chen, W
collection OXFORD
description We report here the synthesis and characterization of two endohedral Zintl-ion clusters, [Fe4Sn18]4− and [Fe4Pb18]4−, which contain rhombic Fe4 cores. The Fe–Fe bond lengths are all below 2.5 Å, distinctly shorter than in the corresponding Cu clusters, indicating the presence of Fe–Fe bonding. Subtle differences in the structure of the Fe4 core between the two clusters suggest that the change in tetrel element causes a change in electronic ground state, with a very short Fe–Fe bond length of 2.328 Å present across the diagonal of the rhombus in the lead case.
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spelling oxford-uuid:ccf65ffe-9586-4717-81df-5e1dc24a4e0e2024-05-30T10:06:16ZFe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ccf65ffe-9586-4717-81df-5e1dc24a4e0eEnglishJisc Publications RouterRoyal Society of Chemistry2024Chen, WLi, ZMorgan, HWTShu, CSun, ZMcGrady, JEWe report here the synthesis and characterization of two endohedral Zintl-ion clusters, [Fe4Sn18]4− and [Fe4Pb18]4−, which contain rhombic Fe4 cores. The Fe–Fe bond lengths are all below 2.5 Å, distinctly shorter than in the corresponding Cu clusters, indicating the presence of Fe–Fe bonding. Subtle differences in the structure of the Fe4 core between the two clusters suggest that the change in tetrel element causes a change in electronic ground state, with a very short Fe–Fe bond length of 2.328 Å present across the diagonal of the rhombus in the lead case.
spellingShingle Chen, W
Li, Z
Morgan, HWT
Shu, C
Sun, Z
McGrady, JE
Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †
title Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †
title_full Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †
title_fullStr Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †
title_full_unstemmed Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †
title_short Fe–Fe bonding in the rhombic Fe 4 cores of the Zintl clusters [Fe 4 E 18 ] 4− (E = Sn and Pb) †
title_sort fe fe bonding in the rhombic fe 4 cores of the zintl clusters fe 4 e 18 4 e sn and pb †
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