Heavy‐Atom Tunneling in Organic Reactions

C Castro, WL Karney - Angewandte Chemie, 2020 - Wiley Online Library
In the past few years, numerous investigations have been reported on the role of heavy‐
atom tunneling in the area of pericyclic reactions, π‐bond‐shifting, and other processes …

Strategies for design of potential singlet fission chromophores utilizing a combination of ground-state and excited-state aromaticity rules

O El Bakouri, JR Smith, H Ottosson - Journal of the American …, 2020 - ACS Publications
Singlet exciton fission photovoltaic technology requires chromophores with their lowest
excited states arranged so that 2 E (T1)< E (S1) and E (S1)< E (T2). Herein, qualitative …

Quantum Tunneling Instability in Pericyclic Reactions

A Frenklach, H Amlani, S Kozuch - Journal of the American …, 2024 - ACS Publications
Several cycloreversion reactions of the retro-Diels–Alder type were computationally
assessed to understand their quantum tunneling (QT) reactivity. N2, CO, and other leaving …

Switch chemistry at cryogenic conditions: quantum tunnelling under electric fields

O Kirshenboim, A Frenklah, S Kozuch - Chemical Science, 2021 - pubs.rsc.org
While the influence of intramolecular electric fields is a known feature in enzymes, the use of
oriented external electric fields (EEF) to enhance or inhibit molecular reactivity is a …

Fulvalene as a platform for the synthesis of a dimetallic dysprosocenium single-molecule magnet

M He, FS Guo, J Tang, A Mansikkamäki… - Chemical Science, 2020 - pubs.rsc.org
The dinucleating fulvalenyl ligand [1, 1′, 3, 3′-(C5tBu2H2) 2] 2−(Fvtttt) was used to
synthesize the dimetallic dysprosocenium cation [{Dy (η5-Cp*)} 2 (μ-BH4)(η5: η5-Fvtttt)]+(3) …

Quantum mechanical tunnelling: the missing term to achieve sub-kJ mol− 1 barrier heights

S Kozuch, T Schleif, A Karton - Physical Chemistry Chemical Physics, 2021 - pubs.rsc.org
To predict barrier heights at low temperatures, it is not enough to employ highly accurate
electronic structure methods. We discuss the influence of quantum tunnelling on the …

Tunneling by 16 carbons: planar bond shifting in [16] annulene

CS Michel, PP Lampkin, JZ Shezaf… - Journal of the …, 2019 - ACS Publications
Midsized annulenes are known to undergo rapid π-bond shifting. Given that heavy-atom
tunneling plays a role in planar bond shifting of cyclobutadiene, we computationally …

Computational Evidence for Tunneling and a Hidden Intermediate in the Biosynthesis of Tetrahydrocannabinol

EM Greer, V Siev, A Segal, A Greer… - Journal of the …, 2022 - ACS Publications
Quantum tunneling is computed for a reaction sequence that models the conversion of the
ortho-quinone methide of cannabigerolic acid 1 to the decarboxylated product (−)-trans-Δ9 …

Thioxobimanes

PJ Das, A Roy, A Nandi, I Neogi… - The Journal of …, 2023 - ACS Publications
Dioxobimanes, colloquially known as bimanes, are a well-established family of N-
heterobicyclic compounds that share a characteristic core structure, 1, 5-diazabicyclo [3.3. 0] …

Exploiting the Aromatic Chameleon Character of Fulvenes for Computational Design of Baird‐Aromatic Triplet Ground State Compounds

S Yadav, O El Bakouri, K Jorner, H Tong… - Chemistry–An Asian …, 2019 - Wiley Online Library
Due to the reversal in electron counts for aromaticity and antiaromaticity in the closed‐shell
singlet state (normally ground state, S0) and lowest ππ* triplet state (T1 or T0), as given by …