Narrow Gap Semiconducting Germanium Allotrope from the Oxidation of a Layered Zintl Phase in Ionic Liquids

Journal of the American Chemical Society
Zhongjia TangArnold M. Guloy

Abstract

A metastable germanium allotrope, Ge(oP32), was synthesized as polycrystalline powders and single crystals from the mild-oxidation/delithiation of Li7Ge12 in ionic liquids. Its crystal structure, from single crystal X-ray diffraction ( Pbcm, a = 8.1527(4) Å, b = 11.7572(5) Å, c = 7.7617(4) Å), features a complex covalent network of 4-bonded Ge, resulting from a well-ordered topotactic oxidative condensation of [Ge12]7- layers. It is a diamagnetic semiconductor ( Eg = 0.33 eV), and transforms exothermically and irreversibly to α-Ge at 363 °C. This demonstrates the potential of ionic liquids as reactive media in the mild oxidation of Zintl phases to new highly crystallized modifications of elements and simple compounds.

References

Nov 15, 1985·Physical Review. B, Condensed Matter·D J Chadi
Jul 1, 1986·Physical Review. B, Condensed Matter·C S MenoniI L Spain
Feb 1, 1996·Physical Review. B, Condensed Matter·R J NelmesM Hanfland
Oct 1, 1993·Physical Review. B, Condensed Matter·R J NelmesJ S Loveday
May 5, 1986·Physical Review Letters·Y K VohraM L Cohen
Jan 29, 2000·Angewandte Chemie·C DownieA M Guloy
Jul 22, 2006·Science·Gerasimos S Armatas, Mercouri G Kanatzidis
Sep 22, 2006·Nature·Arnold M GuloyYuri Grin
Sep 28, 2006·Chemical Society Reviews·Malcolm I McMahon, Richard J Nelmes
Jan 25, 1963·Science·F P Bundy, J S Kasper
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Aug 2, 2008·Angewandte Chemie·Ulrich SchwarzYuri Grin
Mar 16, 2013·Scientific Reports·Daniele SelliStefano Leoni
Mar 20, 2013·ACS Nano·Elisabeth BiancoJoshua E Goldberger
Jan 4, 2017·Nature Communications·Zhisheng ZhaoTimothy A Strobel

❮ Previous
Next ❯

Citations

Jan 19, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Alexander P LitvinchukArnold M Guloy
Mar 21, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Yanxing SongYintang Yang
Feb 6, 2021·Chemical Communications : Chem Comm·Jiayang LiXiaobo Ji
Jul 17, 2021·Chemistry : a European Journal·Xian-Juan FengBodo Böhme

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.