Low Valent and Hypercoordinate Heavier Group 14 Compounds
A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".
Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 416
Special Issue Editor
Special Issue Information
Dear Colleagues,
The chemistry of group 14 elements is exceptionally rich and diverse but displays a very pronounced variation upon descending the periodic table. While catenation, aromaticity or homo- and heteronuclear multiple bonding are fundamental concepts in organic chemistry, the heavier group 14 elements are affected by an increase in the energy separation between ns- and np-orbitals (n = 3–6) and a decrease in bond strength towards organic substituents or hydrogen. The inert pair effect, i.e., chemical inertness of the s-electrons, results in geometric distortions of molecules with formal multiple bonding, reduced aromatic character or highly pyramidalized geometries of anions and, thus, larger inversion barriers. Parallel to the increase in Lewis acidity with a growing principal quantum number, group 14 element compounds show an increasing propensity for the formation of hypercoordinate compounds and hence can also act as Lewis acid catalyst in a variety of reactions.
This Special Issue aims to cover anionic, cationic or radicals centered on the group 14 elements silicon to lead. It is also intended to include heavier homologues of aromatic compounds, carbenes, multiple bonded systems, inter- and intramolecular coordination compounds or (transition) metal complexes based on heavier group 14 elements. It aims to highlight recent synthetic achievements and the investigation of their structural and spectroscopic properties and stretches towards the study of low valent or high coordinate heavier group 14 compounds in small molecules activation, catalysis or materials chemistry.
I cordially invite colleagues to submit manuscripts and share exciting results in this Special Issue.
Prof. Dr. Roland C. Fischer
Guest Editor
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Keywords
- Heavier group 14 compounds
- Silicon
- Germanium
- Tin
- Lead
- Low valent compounds
- Hypercoordination compounds
- Small molecule activation
- Heavier carbene homologues
- Multiple bonding
- Anions
- cations
- radicals
- Aromaticity
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