Four Decades of the Chemistry of Planar Hypercoordinate Compounds. Issue 33 (26th June 2015)

• Record Type: Journal Article
• Authors: Yang, Li‐Ming; Ganz, Eric; Chen, Zhongfang; Wang, Zhi‐Xiang; Schleyer, Paul von Ragué
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 33(2015)
• Page Start: 9468
• Page End: 9501
• Publication Date: 2015-06-26
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201410407
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>