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Haas CD, Fischer A, Hauf C, Wieser C, Schmidt AP, Eickerling G, Scheidt EW, Schiffmann JG, Reckeweg O, DiSalvo FJ, Rodewald UC, Pöttgen R, van Wüllen L, Scherer W. The Color of the Elements: A Combined Experimental and Theoretical Electron Density Study of ScB 2 C 2. Angew Chem Int Ed Engl 2019; 58:2360-2364. [PMID: 30570814 DOI: 10.1002/anie.201813102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Indexed: 11/08/2022]
Abstract
The chemical or physical control parameters for the onset of superconductivity in MB2 C2 hetero-graphene materials are unclear. This is mainly due to the almost ubiquitous positional B/C disorder, rendering the description of real structures of borocarbides into one of the most challenging problems in materials science. We will show that high-resolution X-ray diffraction data provides all the essential information to decode even complex coloring problems due to B/C disorder. Electron density studies and subsequent analyses of the fine structure of the Laplacian of the electron density resolves the local electronic structure of ScB2 C2 at sub-atomic resolution and allows for an unequivocal identification of all atoms involved in the coloring scenario. This information could finally be used to identify the electron deficient character of the B/C layers in ScB2 C2 and to synthesize the first bimetallic hetero-metallocene with lithium and scandium atoms embedded in the pentagonal and heptagonal voids, respectively.
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Affiliation(s)
- Christof D Haas
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | - Andreas Fischer
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | - Christoph Hauf
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | - Christian Wieser
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | | | - Georg Eickerling
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | | | - Jan G Schiffmann
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | - Olaf Reckeweg
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853-1301, USA
| | - Francis J DiSalvo
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853-1301, USA
| | - Ute C Rodewald
- Institut für Anorganische und Analytische Chemie, Universität Münster, 48149, Münster, Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie, Universität Münster, 48149, Münster, Germany
| | - Leo van Wüllen
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
| | - Wolfgang Scherer
- Institut für Physik, Universität Augsburg, 86135, Augsburg, Germany
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Haas CD, Fischer A, Hauf C, Wieser C, Schmidt AP, Eickerling G, Scheidt EW, Schiffmann JG, Reckeweg O, DiSalvo FJ, Rodewald UC, Pöttgen R, van Wüllen L, Scherer W. The Color of the Elements: A Combined Experimental and Theoretical Electron Density Study of ScB2
C2. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christof D. Haas
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
| | - Andreas Fischer
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
| | - Christoph Hauf
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
| | - Christian Wieser
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
| | | | - Georg Eickerling
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
| | | | | | - Olaf Reckeweg
- Department of Chemistry and Chemical Biology; Cornell University; Ithaca NY 14853-1301 USA
| | - Francis J. DiSalvo
- Department of Chemistry and Chemical Biology; Cornell University; Ithaca NY 14853-1301 USA
| | - Ute C. Rodewald
- Institut für Anorganische und Analytische Chemie; Universität Münster; 48149 Münster Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie; Universität Münster; 48149 Münster Germany
| | - Leo van Wüllen
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
| | - Wolfgang Scherer
- Institut für Physik; Universität Augsburg; 86135 Augsburg Germany
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