File:Dimethylacetylene cyclotrimerisation with titanium tetrachloride catalyst.jpg

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Description	Catalytic cycle for the cyclotrimerisation of 2-butyne (dimethylacetylene) to form hexamethylbenzene, catalysed by titanium tetrachloride and triisobutylaluminium. Mechanism derived for Advanced Organic Chemistry by Jerry March.
Source	Image created by user:EdChem and uploaded the same day. Hopefully this crude image will be replaced shortly with a properly drawn SVG shortly. Chemical structures are not copyrightable so this image is in the public domain.
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Additional information	This is a temporary file awaiting a properly-drawn replacement, which will be suitable for Commons but this is not as it is inappropriate for long-term inclusion in article space. Once the replacement is in place, the uploader (user:EdChem, me) will request removal under CSD

Do not copy this file to Wikimedia Commons. This is a temporary file awaiting a properly-drawn replacement, which will be suitable for Commons but this is not as it is inappropriate for long-term inclusion in article space. Once the replacement is in place, the uploader (user:EdChem, me) will request removal under CSD

Image created by user:EdChem and uploaded the same day. Hopefully this crude image will be replaced shortly with a properly drawn SVG shortly. Chemical structures are not copyrightable so this image is in the public domain.

This image of a simple structural formula is ineligible for copyright and therefore in the Public domain, because it consists entirely of individual words, simple geometric shapes, and information that is common property, and contains no original authorship. PD Public domain false false