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 …

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 …

We perform a global search of the most stable structures of 2D stoichiometric Al x C (x= 1/3,
1, 2, and 3) monolayer sheets. In the most stable 2D planar AlC network, every carbon atom …

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 …

Carbon-doped aluminum cluster anions, Al n C–(n= 6–15), were generated by laser
vaporization and investigated by mass-selected anion photoelectron spectroscopy. The …

Metal carbides are highly intriguing to researchers due to their diverse properties, including
electrical, thermal, magnetic, and mechanical characteristics. They are prized for their high …

We report the first planar hexacoordinate gallium (phGa) center in the global minimum of the
GaBe6Au6+ cluster which has a star-like D6h geometry with 1A1g electronic state …

Ethynylcyclopropenylidene (2), an isomer of C5H2, is a known molecule in the laboratory
and has recently been identified in Taurus Molecular Cloud-1 (TMC-1). Using high-level …

The AlnC5−(n= 1–5) clusters were detected in the gas-phase and were investigated via
mass-selected anion photoelectron spectroscopy. The structures of AlnC5−/0 (n= 1–5) were …

Density functional theory (DFT) is used to explore the structure, stability, and bonding in
CSiGaAl2−/0 and CGeGaAl2−/0 systems having planar tetracoordinate carbon (ptC). The …