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An isolated boron trifluoride molecule has trigonal planar molecular geometry and the D3h molecular point group. Its three equal fluorine contributions give and in the rigid rotor approximation.
A coordination complex with four carbon-bound cyanide ligands and a formal nickel(II), , centre. Square planar molecular geometry permits a low-spin complex with no unpaired electrons.
A planar six-membered aromatic ring with nitrogen at opposite ring sites. Its molecular point group is the D2h point group. The six ring atomic orbitals form a six-electron conjugated system; the in-plane nitrogen lone pairs are outside this basis.
An oxime contains a group, commonly formed from a carbonyl compound and hydroxylamine. Unsymmetrical ketoximes can have distinct geometrical isomers.
The compound . Its nitrogen can add to carbonyl compounds, followed by dehydration to an oxime.
A short-lived primary ozonide formed by ozone cycloaddition to an alkene. Fragmentation generates a carbonyl compound and a carbonyl oxide.
A hydrogen halide has formula , with hydrogen bonded to a halogen. Hydrogen fluoride, hydrogen chloride, hydrogen bromide, and hydrogen iodide are familiar examples.
The compound . nucleophilic substitution at its bromomethylene carbon introduces an allyl group without consuming the alkene.
Two phenyl rings joined directly by a carbon–carbon bond. Restricted rotation and appropriate substituents can produce axial chirality.
The dianion of pyridine-2,5-dicarboxylic acid, useful as a bridging ligand because its N,O donor pair and its more remote carboxylate can bind different metal centres.
The anion , which can coordinate through nitrogen or sulfur. Linkage changes donor identity without changing its formal charge.
The ionic compound , commonly used as a strong base. ketone deprotonation produces an enolate and Ammonia.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact