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Investigating Tetrel-Based Neutral Frustrated Lewis Pairs for Hydrogen Activation by Pallavi Sarkar; Shubhajit Das; Swapan K. Pati is a Chemistry article available to read on EtoBox.

What is Investigating Tetrel-Based Neutral Frustrated Lewis Pairs for Hydrogen Activation about?

Tetrel Lewis acids are a prospective alternative to commonly employed neutral boranes in frustrated Lewis pair (FLP) chemistry. While cationic tetrylium Lewis acids, being isolobal and iso(valence)electronic, are a natural replacement to boranes, neutral tetrel Lewis acids allude as less trivial options due to the absence of a formally empty p orbital on the acceptor atom. Recently, a series of intramolecular geminal FLPs (E = Si, Ge, Sn) featuring neutral tetrel atoms as acceptor sites has been reported for activation of small molecules including H. In this work, through density functional theory computations, we elucidate the general mechanistic picture of H activation by this family of FLPs. Our findings reveal that the acceptor atom derives the required Lewis acidity utilizing the antibonding orbitals of its adjacent bonds with the individual contributions depending on the identity of the acceptor and the donor atoms. By varying the identity of the Lewis acid and Lewis base sites and attached substituents, we unravel their interplay on the energetics of the H activation. We find that switching the donor site from P to N significantly affects the synchronous nature of the bond b

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Author

Pallavi Sarkar; Shubhajit Das; Swapan K. Pati

Publisher

American Chemical Society (ACS)

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)