Still actual earlier notes in open access to chemistry journals (and chemical information)
Some publishers grant a temporary or lengthy complimentary access to selected issues or to selected papers of their journals.
Follow the next links to the pages with this kind of information (sorted by Publisher):
American Chemical Society (ACS)
International Union of Crystallography (IUCr)
Royal Society of Chemistry (RSC)
Taylor and Francis
The International Society of Electrochemistry
Books of Abstracts of Annual and Topical Meetings of The International Society of Electrochemistry (ISE) - (2006-2020) : new developments in electrochemical science and technology in areas such as new materials, microfabrication, sensor technology, electronics, energy storage and conversion, and environmental technologies.
CLOCKSS is a digital preservation dark archive for scholarly content currently housing 48.5 million journal articles, over 34,000 serial and 360,000 book titles. CLOCKSS’s content is hosted on 12 servers around the world, at leading academic libraries, with robust infrastructure and security. In case of a destructive event in one location the 11 other locations serve as mirror sites to back-up and repair the disrupted location’s archive.
CLOCKSS ensures the long-term survival of digital scholarly content for future generations of researchers. The content is resilient to threats from potential technological, economic, environmental and political failures.
Digital content is stored in the CLOCKSS archive with no user access unless a “trigger” event occurs. If content that is held in the Archive disappears (or is about to disappear) from the Web, CLOCKSS “triggers” it for Open Access.
Here is an example of a triggered journal: Organic Chemistry Insights.
Portico is one another dark archive that stores Web scholary content and makes it available for public upon a trigger event (i. e. when an item disappears from the Web).
Currently, a dozen of chemistry related journals are on the list of triggered titles.
Portico is a service for participating libraries mainly, but OA journals are openly accessible at the Portico site.
Open Material Sciences (2014-2019) and Organic Photonics and Photovoltaics (2013-2019) are examples of triggered content at Portico.
Note that mobile devices may download only first pages of articles, and there is no problem with access to full-text PDFs if one uses a desktop.
De Gruyter and IUPAC extend a free access to IUPAC Standards Online Database until 31 December 2023.
CAS Common Chemistry is a primary reference database of reliable CAS Registry Numbers (CAS RNs), especially valuable for for those users who have no access to CAS REGISTRY or CAS SciFinder.
Not long ago its dataset was expanded from 8000 to 500,000 chemical substances.
Each record includes a chemical name, chemical synonyms, identifiers (InChI, InChIKey, SMILES), chemical structure image, and basic substance properties, where available.
General Index: A new insrument for powerful text mining.
The General Index is a new huge database of more than 355 billion words and phrases extracted from 107 mln. scientific publications.
Each record contains metadata of the article and DOI of the primery source.
The database is free to use but its structure is rather complex. There is no search interface. Users should downlod files and develop their own search engines. In its compressed format, the database totals almost 5 terabytes, and then expands to 38 terabytes.
Read more in Nature: Giant, free index to world’s research papers released online
Chemistry - coronavirus - COVID-19
It is worth reminding that all leading publishers grant free access to their publications on coronavirus research.
Here are some great examples:
Elsevier's Novel Coronavirus Information Center - articles and guidelines for clinicians and patients.
Springer/Nature's Coronavirus (COVID-19) Research Highlights.
Wiley's Covid-19: Novel Coronavirus Outbreak - articles, book chapters and Special Collections.
ACS - Chemistry in Coronavirus Research: A Free to Read Collection from the American Chemical Society.
Royal Society of Chemistry's Coronavirus articles - free to access collection.