Four decades of the chemistry of planar hypercoordinate compounds

LM Yang, E Ganz, Z Chen, ZX Wang… - Angewandte Chemie …, 2015 - Wiley Online Library
The idea of planar tetracoordinate carbon (ptC) was considered implausible for a hundred
years after 1874. Examples of ptC were then predicted computationally and realized …

The induced magnetic field

R Islas, T Heine, G Merino - Accounts of Chemical Research, 2012 - ACS Publications
Aromaticity is indispensable for explaining a variety of chemical behaviors, including
reactivity, structural features, relative energetic stabilities, and spectroscopic properties …

Planar pentacoordinate carbons

V Vassilev-Galindo, S Pan, KJ Donald… - Nature Reviews …, 2018 - nature.com
Carbon centres in typical organic molecules have a coordination number that can reach a
maximum of four, in which case the bonded atoms are situated at the vertices of a …

Not all that has a negative NICS is aromatic: the case of the H-bonded cyclic trimer of HF

R Islas, G Martínez-Guajardo… - Journal of Chemical …, 2010 - ACS Publications
In this work, we used the induced magnetic field (B ind) to study the degree of aromaticity of
the planar (HF) 3 ring. The induced magnetic field analysis shows that the degree of electron …

Exploiting electronic strategies to stabilize a planar tetracoordinate carbon in cyclic aromatic hydrocarbons

O Yañez, A Vásquez-Espinal, R Pino-Rios… - Chemical …, 2017 - pubs.rsc.org
A new approach to stabilize compounds containing a planar tetracoordinate carbon (ptC),
embedded in aromatic hydrocarbons, is presented herein. This is achieved by using ligands …

Simplest Neutral Singlet C2E4 (E = Al, Ga, In, and Tl) Global Minima with Double Planar Tetracoordinate Carbons: Equivalence of C2 Moieties in C2E4 to Carbon Centers in CAl42− and …

YB Wu, HG Lu, SD Li, ZX Wang - The Journal of Physical …, 2009 - ACS Publications
Ab initio and DFT calculations have been carried out to search for the simplest neutral
singlet species with double planar tetracoordinate carbons (dptCs)[the “simplest” means the …

Persistent planar tetracoordinate carbon in global minima structures of silicon-carbon clusters

L Leyva-Parra, D Inostroza, O Yañez, JC Cruz, J Garza… - Atoms, 2022 - mdpi.com
Recently, we reported a series of global minima whose structures consist of carbon rings
decorated with heavier group 14 elements. Interestingly, these structures feature planar …

Stabilization of planar tetra-coordinate silicon in a 2D-layered extended system and design of a high-capacity anode material for Li-ion batteries

MJ Sun, X Cao, Z Cao - Nanoscale, 2018 - pubs.rsc.org
Stabilization of planar tetra-coordinate silicon (ptSi) was achieved in compounds and 2D-
layered extended systems, in which single molecular ptSi in C12H8Si captures four …

Carbon rings decorated with group 14 elements: New aromatic clusters containing planar tetracoordinate carbon

O Yañez, A Vásquez-Espinal, R Báez-Grez… - New Journal of …, 2019 - pubs.rsc.org
A simple and chemically intuitive approach is used to design ptC-containing E–C clusters
(E= Si–Pb). This approach consists in replacing three or two consecutive protons from an …

Structure and Bonding in CE5 (E=Al–Tl) Clusters: Planar Tetracoordinate Carbon versus Pentacoordinate Carbon

E Ravell, S Jalife, J Barroso… - Chemistry–An Asian …, 2018 - Wiley Online Library
The structure, bonding, and stability of clusters with the empirical formula CE5−(E= Al–Tl)
have been analyzed by means of high‐level computations. The results indicate that …