Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Fe-Fe bonding in the rhombic Fe₄ cores of the Zintl clusters [Fe₄E₁₈]^4- (E = Sn and Pb).

ABSTRACT: 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.

SUBMITTER: Chen WX

PROVIDER: S-EPMC10967007 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Fe-Fe bonding in the rhombic Fe4 cores of the Zintl clusters [Fe4E18]4- (E = Sn and Pb).

Chen Wei-Xing WX Li Zi-Sheng ZS Morgan Harry W T HWT Shu Cong-Cong CC Sun Zhong-Ming ZM McGrady John E JE

Chemical science 20240228 13

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 ...[more]

PMID: 38550677

Similar Datasets

1-Azahomocubane† † Electronic supplementary information (ESI) available. CCDC 2177501. For ESI and crystallographic data in CIF or other electronic format see DOI: https://doi.org/10.1039/d3sc00001j

Project description:Highly strained cage hydrocarbons have long stood as fundamental molecules to explore the limits of chemical stability and reactivity, probe physical properties, and more recently as bioactive molecules and in materials discovery. Interestingly, the nitrogenous congeners have attracted much less attention. Previously absent from the literature, azahomocubanes, offer an opportunity to investigate the effects of a nitrogen atom when incorporated into a highly constrained polycyclic environment. Herein disclosed is the synthesis of 1-azahomocubane, accompanied by comprehensive structural characterization, physical property analysis and chemical reactivity. These data support the conclusion that nitrogen is remarkably well tolerated in a highly strained environment. 1-Azahomocubane has been prepared 56 years after the parent hydrocarbon. Introduction of a nitrogen atom into this constrained polycyclic environment resulted in minimal changes to the framework geometry, with s-character of the nitrogen lone pair increasing due to strain.

| S-EPMC10016339 | biostudies-literature

Molecular imine cages with π-basic Au3(pyrazolate) faces† † Electronic supplementary information (ESI) available: Synthetic procedures and experimental details. CCDC 2284420–2284425 and 2309725. For ESI and crystallographic data in CIF or other electronic format see DOI: https://doi.org/10.1039/d3sc06280e