Английская Википедия:Cuneane

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Версия от 21:01, 22 февраля 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{short description|Saturated hydrocarbon compound (C₈H₈)}} {{Chembox | ImageFile = Cuneane-HF-Mercury-3D-balls.png | ImageFile_Ref = {{chemboximage|correct|??}} | ImageSize = 160 | ImageName = Ball and stick model of cuneane (1R,2R,3S,4S,5S,6R,7R,8S) | PIN = Pentacyclo[3.3.0.0<sup>2,4</sup>.0<sup>3,7</sup>.0<sup>6,8</sup>]octane |Section1={{Chembox Identifiers | CASNo = 20656-23-9...»)
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Шаблон:Short description Шаблон:Chembox

Cuneane (Шаблон:Ety[1]) is a saturated hydrocarbon with the formula Шаблон:Chem2 and a 3D structure resembling a wedge, hence the name. Cuneane may be produced from cubane by metal-ion-catalyzed σ-bond rearrangement.[2][3] Similar reactions are known for Шаблон:Chem name (Шаблон:Chem2) and bishomocubane (Шаблон:Chem2).[4][5]

Файл:CubaneToCun.png
Synthesis of cuneane from cubane
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Molecular geometry

The carbon atoms in the cuneane molecule form a hexahedron with point group C2v. The cuneane molecule has three groups of equivalent carbon atoms (A, B, C), which have also been confirmed by NMR.[6] The molecular graph of the carbon skeleton of cuneane is a regular graph with non-equivalent groups of vertices, and so it is a very important test object for different algorithms of mathematical chemistry.[7][8]

Файл:Cuneane 2D.svg
Equivalent carbon atoms in cuneane
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Derivatives

Some cuneane derivatives have liquid crystal properties.[9]

References

Шаблон:Reflist