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Benzocyclooctatetraene is a polycyclic hydrocarbon with chemical formula C 12 H 10, composed of fused a benzene ring and a cyclooctatetraene ring. Only the benzene ring is aromatic in this compound. Only the benzene ring is aromatic in this compound.
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1,3,5,7-Cyclooctatetraene (COT) is an unsaturated derivative of cyclooctane, with the formula C 8 H 8. It is also known as [8] annulene . This polyunsaturated hydrocarbon is a colorless to light yellow flammable liquid at room temperature.
This suggests that the cyclooctatetraene ligands are highly fluxional and some degree of paramagnetism. [1] Fluxional Ring rotation in Fe 3 (COT) 3 depicted by DeKock et al. [13] COT is known to be a highly fluxional ligand in other compounds too, such compounds being deemed “ring-whizzers” (like the related (cyclooctatetraene)iron ...
Alkylbenzene isomers can be differentiated by observing the position of alkyl substituents on the benzene ring using chemical ionization-proton exchange mass spectrometry. Conventional GC-MS yields limited results because the isomers have identical molecular weight and substituents.
An alkyne trimerisation is a [2+2+2] cycloaddition reaction in which three alkyne units (C≡C) react to form a benzene ring. The reaction requires a metal catalyst.The process is of historic interest as well as being applicable to organic synthesis. [1]
In the area of homogeneous catalysis, the cyclo-oligomerization of acetylene to cyclooctatetraene at a nickel(II) centre reflects the templating effect of the nickel, where it is supposed that four acetylene molecules occupy four sites around the metal and react simultaneously to give the product. This simplistic mechanistic hypotheses was ...
Computational chemistry suggests a tricyclic[10]annulene derivative with an annulated benzene ring and a full set of cyano substituents would be one of the most acidic compounds known, with a computed pK a in DMSO of −30.4 (compared to for instance −20 for magic acid).