We summarize our contributions on the quest of new planar tetracoordinate carbon entities
(new carbon molecules with exotic chemical structures and strange bonding schemes). We …

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 …

Sets of boron rings enclosing planar hypercoordinate group 14 elements (AB n (n-8); A=
group 14 element; n= 6− 10) are designed systematically based on geometrical and …

A series of molecules, based on the smallest carbon cluster with one planar tetracoordinate
carbon atom, C52-, are presented. To gain a better understanding about which electronic …

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 …

Using previously proposed C (BH) 2 (CH) 2 (16, 17) and C (CH) 2B2 (22) systems with a
central planar tetracoordinate carbon (ptC) atom linking two three-membered rings as …

A series of cyclic hydrocarbons analogs where a carbon displays unusual planar
tetracoordinate structure is proposed, employing hybrid density functional theory …

It is widely known that the skeletal structure of clusters reflects the number of skeletal
bonding electron pairs involved, which is called the polyhedral skeletal electron pair theory …

A novel preference for planar tetracoordination was observed over the conventional
tetrahedral arrangement in a new series of C5H2, C5H4, C5H41+/2+ and related …

A novel structural pattern: two-dimensional, five-membered ring-like boron hydride system
B6H5+, which contains both planar tetra-and pentacoordinated boron (ptB and ppB) was …