Four Decades of the Chemistry of Planar Hypercoordinate Compounds

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

Related collections

Most cited references 278

Record: found
Abstract: not found
Article: not found

Nucleus-independent chemical shifts (NICS) as an aromaticity criterion.

Zhongfang Chen, Chaitanya S. Wannere, Clémence Corminboeuf … (2005)

0 comments Cited 424 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Developing paradigms of chemical bonding: adaptive natural density partitioning.

Dmitry Yu Zubarev, Alexander Boldyrev (2008)

A method of description of the chemical bonding combining the compactness and intuitive simplicity of Lewis theory with the flexibility and generality of canonical molecular orbital theory is presented, which is called adaptive natural density partitioning. The objects of chemical bonding in this method are n-center 2-electron bonds, where n goes from one (lone-pair) to the maximum number of atoms in the system (completely delocalized bonding). The algorithm is a generalization of the natural bonding orbital analysis and is based on the diagonalization of the blocks of the first-order density matrix in the basis of natural atomic orbitals. The results obtained by the application of the algorithm to the systems with non-classical bonding can be readily interpreted from the point of view of aromaticity/antiaromaticity concepts. The considered examples include Li4 cluster and a family of planar boron clusters observed in molecular beams.

0 comments Cited 241 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Planar hexagonal B(36) as a potential basis for extended single-atom layer boron sheets.

Zachary A Piazza, Han-Shi Hu, Wei-Li Li … (2014)

Boron is carbon's neighbour in the periodic table and has similar valence orbitals. However, boron cannot form graphene-like structures with a honeycomb hexagonal framework because of its electron deficiency. Computational studies suggest that extended boron sheets with partially filled hexagonal holes are stable; however, there has been no experimental evidence for such atom-thin boron nanostructures. Here, we show experimentally and theoretically that B36 is a highly stable quasiplanar boron cluster with a central hexagonal hole, providing the first experimental evidence that single-atom layer boron sheets with hexagonal vacancies are potentially viable. Photoelectron spectroscopy of B36(-) reveals a relatively simple spectrum, suggesting a symmetric cluster. Global minimum searches for B36(-) lead to a quasiplanar structure with a central hexagonal hole. Neutral B36 is the smallest boron cluster to have sixfold symmetry and a perfect hexagonal vacancy, and it can be viewed as a potential basis for extended two-dimensional boron sheets.