A Lewis Base‐Free Trialumane: Enhanced Electrophilicity Based on Consecutive Vacant Orbitals Over Three Aluminum Atoms
A Lewis base-free trialumane having a 2,4,6-triisopropylphenyl (Tip) substituent was synthesized by a reaction of alumanyl anion with TipAlBr<sub>2</sub>. The structure, bonding, and electronic properties of the Tip-substituted trialumane were estimated by NMR spectra, X-ray crystallographic analysis, DFT calculations, X-ray photoelectron spectra, and electrochemical study to reveal its two consecutive Al─Al covalent bonds and overlapped vacant orbitals of three Al atoms. Chemical reduction of Tip-substituted trialumane gave a series of alumanyl anions via the cleavage of the Al─Al bonds. This study shows the low-lying characteristic LUMO that consists of vacant orbitals of three Al atoms in the base-free trialumane.
Authors
- Ryotaro Yamanashi
- Mizuki Tada (ORCID: https://orcid.org/0000-0001-8627-7032)
- Takumi Moriyama
- Taisuke Ozaki (ORCID: https://orcid.org/0000-0002-4384-4938)
- Satoshi Muratsugu (ORCID: https://orcid.org/0000-0002-3596-7380)
- Makoto Yamashita (ORCID: https://orcid.org/0000-0002-3665-5311)
- Chaoqi Chen (ORCID: https://orcid.org/0000-0002-5645-7718)
Institutions
- Tokyo Institute of Technology (JP)
- Tokai Gakuen University (JP)
- Institute of Science Tokyo (JP)
- Nagoya University (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- Chemistry - A European Journal
- Published
- 2025-04-07
- DOI
- https://doi.org/10.1002/chem.202501315
- Citations
- 4
- Primary Topic
- Inorganic Chemistry and Materials
- Type
- article
- Field-Weighted Citation Impact
- 2.15
Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science