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This might be seen as cranking a handle by producing yet more examples of acids ionised by a small number of water molecules. I justify it (probably only to myself) as an exercise in how a scientist might approach a problem, and how it linearly develops with...
I do not play poker, and so I had to look up a 5-4-3-2-1(A), which Wikipedia informs me is a 5-high straight flush, also apparently known as a steel wheel. In previous posts I have suggested acids which can be ionised by (probably)5, 4, 3 or 1 discrete water...
My previous posts have covered the ionization by a small number of discrete water molecules of the series of halogen acids, ranging from HI (the strongest, pKa -10) via HF (weaker, pKa 3.1) to the pseudo-halogen HCN (the weakest, pKa 9.2). Here I try out...

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On 8th August this year, I posted on a fascinating article that had just appeared in Science (DOI:10.1126/science.1188002), in which the crystal structure was reported of two small molecules,1,3-dimethyl cyclobutadieneandcarbon dioxide, entrapped together inside...
It is not often that an article on the topic of illusion and deception makes it into a chemical journal. Such is addressed (DOI:10.1002/anie.201102210) in no less an eminent journal than Angew Chemie. The illusion (or deception if you will) actually goes to...
Do you fancy a story going from simplicity to complexity, if not absurdity, in three easy steps? Read on! The following problem appears in one of our (past) examination questions in introductory organic chemistry. From relatively mundane beginnings, one can...

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I was all set to write a review of an interesting study of bowtiene 1: its rearrangement to other C10H6 isomers and its dimerization. But as I was gathering my information, I wanted to prepare the images of the optimized geometries, and so I went to get the...
Contributed by Steven Bachrach.Reposted from Computational Organic Chemistry with permissionA short note here mainly to call to the readers attention a fascinating trialogue on the C2 molecule.1Shaik, Danovich, Wu, Su, Rzepa, and Hiberty2 recently...
A short note here mainly to call to the readers attention a fascinating trialogue on the C2 molecule.1 Shaik, Danovich, Wu, Su, Rzepa, and Hiberty2 recently presented a full CI study of C2 and concluded that the molecule contains a quadruple bond (see my previous...