- Award ID(s):
- 1647568
- NSF-PAR ID:
- 10025967
- Date Published:
- Journal Name:
- Philosophical Magazine
- Volume:
- 96
- Issue:
- 32-34
- ISSN:
- 1478-6435
- Page Range / eLocation ID:
- 3336 to 3355
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Abstract The discovery of homodinuclear multiple bonds composed of Group 13 elements represents one of the most challenging frontiers in modern chemistry. A classical triple bond such as N≡N and HC≡CH contains one σ bond and two π bonds constructed from the p orbitals perpendicular to the σ bond. However, the traditional textbook triple bond between two Al atoms has remained elusive. Here we report an Al≡Al triple bond in the designer Na3Al2−cluster predicted in silico, which was subsequently generated by pulsed arc discharge followed by mass spectrometry and photoelectron spectroscopy characterizations. Being effectively Al2−due to the electron donation from Na, the Al atoms in Na3Al2−undergo a double electronic transmutation into Group 15 elements, thus the Al2−≡Al2−kernel mimics the P≡P and N≡N molecules. We anticipate this work will stimulate more endeavors in discovering materials using Al2−≡Al2−as a building block in the gas phase and in the solid state.
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Abstract The discovery of homodinuclear multiple bonds composed of Group 13 elements represents one of the most challenging frontiers in modern chemistry. A classical triple bond such as N≡N and HC≡CH contains one σ bond and two π bonds constructed from the p orbitals perpendicular to the σ bond. However, the traditional textbook triple bond between two Al atoms has remained elusive. Here we report an Al≡Al triple bond in the designer Na3Al2−cluster predicted in silico, which was subsequently generated by pulsed arc discharge followed by mass spectrometry and photoelectron spectroscopy characterizations. Being effectively Al2−due to the electron donation from Na, the Al atoms in Na3Al2−undergo a double electronic transmutation into Group 15 elements, thus the Al2−≡Al2−kernel mimics the P≡P and N≡N molecules. We anticipate this work will stimulate more endeavors in discovering materials using Al2−≡Al2−as a building block in the gas phase and in the solid state.