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- Q1094078 subject Q15213348.
- Q1094078 subject Q7195179.
- Q1094078 subject Q8236012.
- Q1094078 abstract "The allotropes of sulfur refers to the many allotropes of the element sulfur. In terms of large number of allotropes, sulfur is second only to carbon. In addition to the allotropes, each allotrope often exists in polymorphs, delineated by Greek prefixes (α, β, etc.).Furthermore, because elemental sulfur has been an item of commerce for centuries, its various forms are given traditional names. Early workers identified some forms that have later proved to be single or mixtures of allotropes. Some forms have been named for their appearance, e.g. "mother of pearl sulfur", or alternatively named for a chemist who was pre-eminent in identifying them, e.g. "Muthmann's sulfur I" or "Engel's sulfur".The most commonly encountered form of sulfur is the orthorhombic polymorph of S8, which adopts a puckered ring – or "crown" – structure. Two other polymorphs are known, also with nearly identical molecular structures. In addition to S8, sulfur rings of 6, 7, 9–15, 18 and 20 atoms are known. At least five allotropes are uniquely formed at high pressures, two of which are metallic.The number of sulfur allotropes reflects the relatively strong S−S bond of 265 kJ/mol. Furthermore, unlike most elements, the allotropes of sulfur can be manipulated in solutions of organic solvents and is amenable to analysis by HPLC.".
- Q1094078 thumbnail Cyclooctasulfur-above-3D-balls.png?width=300.
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- Q1094078 wikiPageWikiLink Q7195179.
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- Q1094078 wikiPageWikiLink Q8236012.
- Q1094078 wikiPageWikiLink Q871.
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- Q1094078 wikiPageWikiLink Q907364.
- Q1094078 comment "The allotropes of sulfur refers to the many allotropes of the element sulfur. In terms of large number of allotropes, sulfur is second only to carbon. In addition to the allotropes, each allotrope often exists in polymorphs, delineated by Greek prefixes (α, β, etc.).Furthermore, because elemental sulfur has been an item of commerce for centuries, its various forms are given traditional names. Early workers identified some forms that have later proved to be single or mixtures of allotropes.".
- Q1094078 label "Allotropes of sulfur".
- Q1094078 depiction Cyclooctasulfur-above-3D-balls.png.