The Bert.Kilanowski source file is stored on Wikimedia Commons with a w:Creative CommonsCC0 1.0 Universal Public Domain Dedication license. Both the upload on 8 March 2019 and this file are being listed with a PD-Chem notice as it is in the public domain as simple chemical structures and equations and thus ineligible for copyright protections.
Public domainPublic domainfalsefalse
This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
This chemical image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.
It is recommended to name the SVG file “Kealy and Pauson synthesis of ferrocene v2.svg”—then the template
Vva
) does not need the new image name parameter.
This chemical image was
PNG or SVG format. If possible, please upload a PNG or SVG version of this image without compression artifacts, derived from a non-JPEG source (or with existing artifacts removed). After doing so, please tag the JPEG version with {{Superseded|NewImage.ext}} and remove this tag. This tag should not be applied to photographs or scans. If this image is a diagram or other image suitable for vectorisation, please tag this image with {{Convert to SVG}} instead of {{BadJPEG}}. If not suitable for vectorisation, use {{Convert to PNG}}. For more information, see {{BadJPEG}}.
Captions
Add a one-line explanation of what this file represents