ORCID Profile
0000-0001-7959-5315
Current Organisation
Hiroshima University
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Publisher: Wiley
Date: 19-01-2023
Abstract: In this study, we afford explicit characterizations of the electronic and geometrical structures of recently reported hypervalent penta‐coordinate carbon compounds by using gas‐phase characterization techniques: photodissociation spectroscopy (PDS) and ion mobility‐mass spectrometry (IM–MS). In particular for a compound with moderately electron‐donating ligands, bearing p ‐methylthiophenyl substituents, the coexistence of tetra‐ and penta‐coordinate isomers is confirmed, consistent with solution characterizations. It is in sharp contrast to the exclusive tetra‐coordinate form (with normal valence of the central carbon atom) in the single crystal. This suggests that a non‐polar environment makes the penta‐coordinate structure thermodynamically most stable. This delicate difference between the tetra‐ and penta‐coordinate structures, which depends on the environment, is a close reflection of the lower activation barrier of the S N 2 reaction found in neutral solvent or gas‐phase reactions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CP03336K
Abstract: A spherand·Li + complex shows characteristic unimolecular dissociation ascribed to the efficient release of dimethyl ethers, providing dibenzofuran frames.
No related grants have been discovered for Yoshiya Inokuchi.