Accession Number:

AD1009752

Title:

Four Decades of the Chemistry of Planar Hypercoordinate Compounds

Descriptive Note:

Journal Article - Open Access

Corporate Author:

University of Puerto Rico at Rio Piedras San Juan Puerto Rico

Report Date:

2015-01-01

Pagination or Media Count:

37.0

Abstract:

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 experimentally. Both electronic and mechanical e.g., small rings and cages effects stabilize these unusual bonding arrangements. Concepts based on the bonding motifs of planar methane and the planar methane dication can be extended to give planar hypercoordinate structures of other chemical elements. Numerous planar configurations of various central atoms main-group and transition-metal elements with coordination numbers up to ten are discussed herein. The evolution of such planar configurations from small molecules to clusters, to nanospecies and to bulk solids is delineated. Some experimentally fabricated planar materials have been shown to possess unusual electrical and magnetic properties. A fundamental understanding of planar hypercoordinate chemistry and its potential will help guide its future development.

Subject Categories:

  • Inorganic Chemistry
  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE