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Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
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Planar pentacoordinate carbons in CBe5(4-) derivatives
Rafael Grande-Aztatzi1, José Luis Cabellos, Rafael Islas
1Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida, Km. 6 Antigua Carretera a Progreso, A.P. 73, Cordemex, Mérida 97310, Yucatán, México. gmerino@mda.cinvestav.mx.
Physical Chemistry Chemical Physics : PCCP
|January 15, 2015
Summary
Researchers explored CBe5Lin(n-4) clusters, finding stable planar pentacoordinate carbon (ppC) structures. These delocalized clusters, stabilized by multicenter bonds, are promising candidates for experimental synthesis.
Area of Science:
- Computational Chemistry
- Materials Science
- Inorganic Chemistry
Background:
- Exploring novel carbon structures is key to advancing materials science.
- Planar pentacoordinate carbon (ppC) motifs are theoretically predicted but experimentally challenging.
- Understanding bonding in hypervalent carbon systems is crucial.
Purpose of the Study:
- To systematically investigate the potential energy surfaces of CBe5Lin(n-4) clusters.
- To identify stable structures and bonding characteristics of these novel clusters.
- To assess the feasibility of experimental preparation for ppC-containing species.
Main Methods:
- Density Functional Theory (DFT) calculations were employed.
- Systematic exploration of potential energy surfaces.
- Induced magnetic field analysis was used to probe electronic delocalization.
Main Results:
- Global minimum energy structures feature a planar pentacoordinate carbon (ppC) atom.
- Lithium cations stabilize the CBe5(4-) pentagonal core.
- Systems exhibit multicenter σ-bonds with charge transfer from carbon.
- Electronic structure calculations indicate full delocalization within the clusters.
Conclusions:
- The studied CBe5Lin(n-4) clusters possess stable, low-energy ppC structures.
- These findings suggest that ppC-containing clusters can be synthesized experimentally.
- The unique bonding and delocalization offer potential for new material properties.
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