Archive for the ‘Chemical IT’ Category

How long will a blog last? ArchivePress

Saturday, January 9th, 2010

After around 40 posts here, I decided to take a look at the whole effort and ask some questions. For example
(more…)

Spotting the unexpected: Anomeric effects

Friday, September 18th, 2009

Chemistry can be very focussed nowadays. This especially applies to target-driven synthesis, where the objective is to make a specified molecule, in perhaps as an original manner as possible. A welcome, but not always essential aspect of such syntheses is the discovery of new chemistry. In this blog, I will suggest that the focus on the target can mean that interesting chemistry can get over-looked (or if observed, not fully exploited in subsequent publications). Taking a synthesis-oriented publication at (almost) random entitled Synthesis of 1-Oxadecalins from Anisole Promoted by Tungsten (DOI: 10.1021/ja803605m) which appeared in 2008, the following molecule appears as one of the (many) intermediates.

(more…)

(Hyper)activating the chemistry journal.

Monday, September 7th, 2009

The science journal is generally acknowledged as first appearing around 1665 with the Philosophical Transactions of the Royal Society in London and (simultaneously) the French Academy of Sciences in Paris. By the turn of the millennium, around 10,000 science and medical journals were estimated to exist. By then, the Web had been around for a decade, and most journals had responded to this new medium by re-inventing themselves for it. For most part, they adopted a format which emulated paper (Acrobat), with a few embellishments (such as making the text fully searchable) and then used the Web to deliver this new reformulation of the journal. Otherwise, Robert Hooke would have easily recognized the medium he helped found in the 17th century.

(more…)

The Fragile Web

Monday, August 31st, 2009

One of the many clever things that clever people can do with the Web is harvest it, aggregate it, classify it etc. Its not just Google that does this sort of thing! Egon Willighagen is one of those clever people. He runs the Chemical blogspace which does all sorts of amazing things with blogs.

(more…)

A lab in a backpack

Friday, April 3rd, 2009

We recently developed a new computational chemistry practical laboratory here at Imperial College. I gave a talk about it at the recent ACS meeting in Salt Lake City. If you want to see the details of the lab, do go here. The talk itself contains further links and examples. Perhaps here I can quote only the final remark, namely that computational chemistry can now provide chemical accuracy for many problems, including spectroscopy and mechanism, and that the basic tools for doing it can easily be carried around in a backpack! Or, perhaps in the not to distant future, an iPhone!

On the importance of Digital repositories in Chemistry

Friday, April 3rd, 2009

The preceeding blog entries contain stories about chemical behaviour. If you have clicked on the diagrams, you may even have gotten a Jmol view of the relevant molecules popping up. But if you are truly curious, you may even have the urge to acquire the relevant 3D information about the molecule, and play with it yourself. Even after 15 years of the  (chemical) Web, this can be distressingly difficult to achieve (or can it be that it is only myself who wishes to view molecules in their  native mode?).  Thus the standard mechanism is to seek out on journal pages that disarming little entry entitled  supporting information and to hope that you might find something useful embedded there.  Embedded is the correct description, since the information is often found within the confines of an Acrobat file, and has to be extracted from there.  Indeed, that is what  I had to resort to in order to write one of the blog entries below. I ground my teeth whilst doing so. 
blog11
So is there a better way? We think so! The  digital repository. If you click on this you should see the entry directly. What can you do there? Well, if you have suitable programs, you can download eg a Checkpoint file of the calculation that created the molecule model and re-activate it there. Or you can download just the CML file for viewing in any CML-compliant program (such as e.g. Jmol). Or you can check up on the InCHi string or the InChI Key of the molecule.

(more…)

Jmol and WordPress: Loading 3D molecular models, molecular isosurfaces and molecular vibrations into a blog

Saturday, April 12th, 2008

An RSS feed of the latest postings

Thursday, October 5th, 2006