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 …

Semi-metallic Be5C2 monolayer global minimum with quasi-planar pentacoordinate carbons and negative Poisson's ratio

Y Wang, F Li, Y Li, Z Chen - Nature communications, 2016 - nature.com
Designing new materials with novel topological properties and reduced dimensionality is
always desirable for material innovation. Here we report the design of a two-dimensional …

FeB6 Monolayers: The Graphene-like Material with Hypercoordinate Transition Metal

H Zhang, Y Li, J Hou, K Tu, Z Chen - Journal of the American …, 2016 - ACS Publications
By means of density functional theory (DFT) computations and global minimum search using
particle-swarm optimization (PSO) method, we predicted three FeB6 monolayers, namely α …

Structure and bonding in planar hypercoordinate carbon compounds

P Das, PK Chattaraj - Chemistry, 2022 - mdpi.com
The term hypercoordination refers to the extent of the coordination of an element by its
normal value. In the hypercoordination sphere, the element can achieve planar and/or non …

Planar hexacoordinate carbons: Half covalent, half ionic

L Leyva‐Parra, L Diego, O Yañez… - Angewandte Chemie …, 2021 - Wiley Online Library
Herein, the first global minima containing a planar hexacoordinate carbon (phC) atom are
reported. The fifteen structures belong to the CE3M3+ (E= S–Te and M= Li–Cs) series and …

CSi n Ge 4− n 2+(n= 1–3): prospective systems containing planar tetracoordinate carbon (ptC)

P Das, M Khatun, A Anoop, PK Chattaraj - … Chemistry Chemical Physics, 2022 - pubs.rsc.org
Density functional theory (DFT) based calculations have been carried out to explore the
potential energy surface (PES) of CSinGe4− n2+/+/0 (n= 1–3) systems. The global minimum …

Planar or tetrahedral? A ternary 17-electron CBe 5 H 4+ cluster with planar pentacoordinate carbon

JC Guo, LY Feng, J Barroso, G Merino… - Chemical …, 2020 - pubs.rsc.org
Planar or tetrahedral? A ternary 17-electron CBe 5 H 4 + cluster with planar
pentacoordinate carbon - Chemical Communications (RSC Publishing) DOI:10.1039/D0CC02973D …

Planar pentacoordinate carbon in a sulphur-surrounded boron wheel: The global minimum of CB 5 S 5+

R Sun, B **, B Huo, C Yuan, HJ Zhai… - Chemical …, 2022 - pubs.rsc.org
We report a σ+ π double aromatic CB5S5+ cluster, the first global minimum unusually
having a planar hypercoordinate carbon inside a boron wheel. Five peripheral sulfur atoms …

Planar tetracoordinate fluorine atoms

G Castillo-Toraya, M Orozco-Ic, E Dzib, X Zarate… - Chemical …, 2021 - pubs.rsc.org
Among the list of planar tetracoordinate atoms, fluorine is missing. So far, there are no
theoretical or experimental reports suggesting their existence. Herein, we introduce the first …

A two-dimensional TiB 4 monolayer exhibits planar octacoordinate Ti

X Qu, J Yang, Y Wang, J Lv, Z Chen, Y Ma - Nanoscale, 2017 - pubs.rsc.org
At present, the concept of planar hypercoordination in chemistry meets the fast development
of two-dimensional (2D) nanomaterials, leading to considerable interest in searching for 2D …