Going Beyond Woodward and Hoffmann's Electrocyclizations and Cycloadditions: Sigmatropic Rearrangements

JI Seeman - The Chemical Record, 2024 - Wiley Online Library
Abstract On June 1, 1965, RB Woodward and Roald Hoffmann published their third
communication in the Journal of the American Chemical Society in which they applied …

Valence, oxidation number, and formal charge: three related but fundamentally different concepts

G Parkin - Journal of chemical education, 2006 - ACS Publications
Terms such as valence, oxidation number, coordination number, formal charge, and number
of bonds are widely used throughout chemistry. Although each of these terms has a distinct …

Electron-deficient multicenter bonding in pnictogens and chalcogens: Mechanism of formation

HH Osman, A Otero-de-la-Roza… - Journal of Materials …, 2024 - pubs.rsc.org
Phase change materials (PCMs), which bear a strong relationship with pnictogens (group V
or 15) and chalcogens (group VI or 16), are mostly chalcogens related to AIVBVI and …

Linear trimer molecule formation by three-center–four-electron bonding in a crystalline solid RuP

D Hirai, K Kojima, N Katayama… - Journal of the …, 2022 - ACS Publications
Some inorganic solids undergo phase transitions that result in the formation of “molecules”
in their crystalline frameworks, which are frequently accompanied by dramatic changes in …

Investigation of some properties of multicenter bond indices

R Ponec, I Mayer - The Journal of Physical Chemistry A, 1997 - ACS Publications
Various recently introduced multicenter bond indices were reviewed and their interrelations
discussed. In addition to this analysis a simple three-center three-orbital model of three …

Three-center four-electron bonds and their indices

T Kar, ES Marcos - Chemical physics letters, 1992 - Elsevier
Two-center and three-center bond indices have been calculated using sp and spd basis sets
for some hypervalent compounds (H− 3, FHF−, ClHCl−, F− 3, Cl− 3, ClF 3, SF 4, XeF 2 and …

The onset of dehydrogenation in solid ammonia borane: An ab initio metadynamics study

V Rizzi, D Polino, E Sicilia, N Russo… - Angewandte Chemie …, 2019 - Wiley Online Library
The discovery of effective hydrogen storage materials is fundamental for the progress of a
clean energy economy. Ammonia borane (H3BNH3, AB) has attracted great interest as a …

IR spectrum of SiH 3 OH 2+ SiH 4: cationic OH⋯ HSi dihydrogen bond versus charge-inverted SiH⋯ Si hydrogen bond

MAR George, O Dopfer - Physical Chemistry Chemical Physics, 2024 - pubs.rsc.org
The low electronegativity of Si gives rise to a variety of nonconventional intermolecular
interactions in clusters of silanes and their derivatives, which have not been well …

16-Electron Nickel(0)-Olefin Complexes in Low-Temperature C(sp2)–C(sp3) Kumada Cross-Couplings

S Lutz, L Nattmann, N Nöthling, J Cornella - Organometallics, 2021 - ACS Publications
Investigations into the mechanism of the low-temperature C (sp2)–C (sp3) Kumada cross-
coupling catalyzed by highly reduced nickel-olefin-lithium complexes revealed that 16 …

Inter/Intramolecular Bonds in TH5+ (T = C/Si/Ge): H2 as Tetrel Bond Acceptor and the Uniqueness of Carbon Bonds

SP Gnanasekar, E Arunan - The Journal of Physical Chemistry A, 2018 - ACS Publications
Atoms in molecules (AIM), natural bond orbital (NBO), and normal coordinate analysis have
been carried out at the global minimum structures of TH5+ (T= C/Si/Ge). All these analyses …