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Related to chalcogen: Chalcogenide, Rare earth metals


Any of the elements appearing in Group 6a of the periodic table, sharing certain chemical properties; oxygen, sulfur, selenium, tellurium, polonium, or element 116.

[Greek khalkos, copper + -gen, since many of the important ores of copper, such as chalcopyrite, contain chalcogens.]


(Elements & Compounds) any of the elements oxygen, sulphur, selenium, tellurium, or polonium, of group 6A of the periodic table
[C20: from chalco(pyrite) + -gen]
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References in periodicals archive ?
TMDs are compounds composed of a transition metal such as molybdenum or tungsten and a chalcogen (typically sulfur, selenium or tellurium, although oxygen is also a chalcogen).
His work revealed examples of cyclic molecules that formed automatically when single tellurium-oxygen chalcogen bonds took the place of hydrogen bonds, a process unlike anything seen in halogen bonding.
In this proposal, we aim to develop first applications for two, previously very little explored non-covalent interactions that are based on electrophilic halogen or chalcogen substituents ( halogen-bonds and chalcogen bonds ).
The other two A-B and B-C intraverbals were analogous, referred to the chalcogen group, polonium, and the atomic number 84.
3], also carry trigonal and quasi-layered lattice features with van-der-Waals bonding between neighbouring chalcogen atomic layers.
This volume from the April 2006 symposium focuses on alloys containing chalcogen atoms that undergo very rapid phase transitions under the influence of either electrical or optical excitation.
They were synthesized in a one-pot reaction using the appropriate phosphine chloride, lithium n-propylamide and chalcogen.
The chalcogens, elements of Groups 5B and 6B of the Periodic Table that form or have a close association with metallic ore minerals yield not only chalcogen-bearing secondary minerals, amorphous compounds and soluble anion complexes when their primary host minerals break down, but also chalcogen gases.
Although it is well known that hydrazine is generally not a good solvent for metal chalcogenides, the presence of the extra chalcogen atoms both improves the solubility and enables control over the film's final composition and grain structure.
New synthetic methods are being explored for the synthesis of unusual [Pi]-bonded pnictogen and chalcogen compounds which may yield novel polymers and pharmaceuticals.