Heavy cyclopropenes of Si, Ge, and Sn- a new challenge in the chemistry of Group 14 elements

Article Abstract:

The authors review the publications on small ring system consisting of Group 14 elements, such as silicon, germanium and tin, which are heavier than carbon. The topics of interest include the synthesis and reactivity of cyclotrimetallenes, the preparation of these compounds starting from cyclotrigermenes, and the analysis of different cyclotrimetallene reactions with the emphasis on cycloaddition and oxidation reactions.

Japan, Silicon, Tin, Germanium, Methods, Composition, Oxidation-reduction reaction, Oxidation-reduction reactions, Cyclic compounds, Chemical bonds, Chemical synthesis, Ring formation (Chemistry), Cyclization (Chemistry), Properties

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Organoselenium and organotellurium compounds: Toxicology and pharmacology

Article Abstract:

Various steps carried out for efficient introduction, manipulation, and removal of organoselenium species are discussed. The toxicological and pharmacological effects of a variety of organoselenium and organotellurium compounds along with their molecular targets are presented.

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Biomethylation of selenium and tellurium: microorganisms and plants

Article Abstract:

The authors review the publications on selenium and tellurium biomethylation. The topics of interest include nutritional and medical considerations for tellurium and selenium, selenium metabolism in plants and tellurium reduction in microorganisms.

United States, Physiological aspects, Plants, Plants (Organisms), Microorganisms, Methylation

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