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 …

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 …

Planar pentacoordinate s-block metals

M Wang, AJ Kalita, M Orozco-Ic, G Yan, C Chen… - Chemical …, 2023 - pubs.rsc.org
The presence of a delocalized π-bond is often considered an essential criterion for
achieving planar hypercoordination. Herein, we show that σ-delocalization could be …

Planar hypercoordinate motifs in two-dimensional materials

Y Wang, Y Li, Z Chen - Accounts of Chemical Research, 2020 - ACS Publications
Conspectus As one of the most important and versatile elements, carbon renders itself as
one of the most fundamental and cutting-edge topics in chemistry, physics, and materials …

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 …

Clusters and bulky Lewis acid protected complexes with planar hexacoordinate beryllium and magnesium

G Yan, Y Liu, X Liu, M Wang, Z Cui… - The Journal of Chemical …, 2023 - pubs.aip.org
Planar hexacoordination (ph) is only rarely reported in the literature. So far, only a few
neutral and cationic molecules possessing phE (E= C, Si, B, Al, Ga) in the most stable …

Planar pentacoordinate carbon atoms embedded in a metallocene framework

Z Cui, V Vassilev-Galindo, JL Cabellos… - Chemical …, 2017 - pubs.rsc.org
Viable planar pentacoordinate carbon (ppC) systems with a ppC bonded to a transition
metal and embedded in a metallocene framework are reported. Our detailed global minima …