NNNS chemistry blog http://chem.vander-lingen.nl Chemistry blog : news - comments - basics in chemistry en-us 1440 Do it yourself pharma http://chem.vander-lingen.nl/articles/Do it yourself pharma/id/269/itemid/893 Big news in The Netherlands: a dispensing chemist in The Hague is challenging a pharmaceutical company by starting a pharmaceutical production line in the back of his shop rather than being forced to wholesale some really expensive medicine (NOS News). The pharma bro's are Vertex, the product is Or Tuesday 21 Nov 2017 20:52:46 Spectacular magnet failure http://chem.vander-lingen.nl/articles/Spectacular magnet failure/id/269/itemid/892 The other day I bought a set of magnets that failed the moment I unpacked them. At 4 euro's not the end of the world but the material failure was spectacular. The button-sized pieces of metal just shattered on any impact, made worse by their large magnetic strength. So before returning them to the Sunday 12 Nov 2017 20:35:29 Duped! http://chem.vander-lingen.nl/articles/Duped!/id/268/itemid/891 From September 2014 to June 2017 Wikipedia user Carolineneil was creating one new chemistry page after the other. Typical titles were 'Modified Wittig-Claisen tandem reaction' and 'Multivalued treatment'. These articles had serious issues and fellow editors and administrators spent many hours sortin Friday 06 Oct 2017 18:46:38 You can call me Al=Al http://chem.vander-lingen.nl/articles/You can call me Al=Al/id/267/itemid/890 A seemingly odd article from the Catalysis Research Center and Institute of Silicon Chemistry, the presentation of an aluminum to aluminum double bond compound (Bag et al. DOI) but silicon has everything to do with it. This dialumene (Al=Al) in question is stabilised by two NHC carbene ligands bot Wednesday 13 Sep 2017 19:54:50 Desalination with a battery http://chem.vander-lingen.nl/articles/Desalination with a battery/id/266/itemid/889 A battery can be used as a desalination plant. The technique is called capacitive deionization: apply a current over two electrodes and use them to temporarily to store the sodium ions and chloride ions and create deionised water. At discharge release the ions again to produce concentrated salt wast Friday 04 Aug 2017 22:12:58 Niemeier and Tilmes on global cooling http://chem.vander-lingen.nl/articles/Niemeier and Tilmes on global cooling/id/265/itemid/888 In a recent Science perspective Niemeier (Max Planck Institute for Meteorology) and Tilmes ( National Center for Atmospheric Research) nicely sum up the present state of climate engineering with sulfur (DOI). In a nutshell: somehow inject a lot of sulfur into the atmosphere and make it counter globa Sunday 23 Jul 2017 22:21:11 Herbicides and where to find them http://chem.vander-lingen.nl/articles/Herbicides and where to find them/id/265/itemid/887 An interesting notion from Corral et al. in the Angewandte: when scouting for new herbicides look at existing antimalarial drugs (DOI). The rationale: malaria and plants share part of their evolution. Where the malaria parasite Plasmodium falciparum has an apicoplast (a kind of organelle used for st Saturday 22 Jul 2017 13:08:04 New in metathesis http://chem.vander-lingen.nl/articles/New in metathesis/id/264/itemid/886 Chemists have been mapping out the scope of the metathesis reaction for over 60 years now and with the availability of many more elements than just carbon the job is not done yet. Lian, Bhawal and Morandi report on an aryl alkyl sulfide - thioalkyl variation in Science. (DOI) This not exactly the Saturday 10 Jun 2017 13:03:06 Hydrogen air space violated http://chem.vander-lingen.nl/articles/Hydrogen air space violated/id/263/itemid/885 With thanks to Mevans86@twitter for the alert, a group of European researchers have discovered something unusual in tri(3,5-tert-butylphenyl)-methane, ordinarily a truly unremarkable compound. They write about it in JACS ( Rösel et al. DOI) The unusual property was uncovered when crystals of the co Sunday 28 May 2017 14:10:57 Diesel dehydrogenation http://chem.vander-lingen.nl/articles/Diesel dehydrogenation/id/263/itemid/884 A novel take on dehydrogenation: from alkanes (oil, more specifically diesel) to hydrogen fuel with elemental carbon as the only side-product. Compare that to the current proven technology steam reforming that goes from methane and water to hydrogen and not carbon but carbon monoxide. Xiangyu Jie Wednesday 24 May 2017 23:22:27 Nanobelt news http://chem.vander-lingen.nl/articles/Nanobelt news/id/262/itemid/882 An organic chemistry feat that the researchers themselves equate to the controlled synthesis of fullerene back in 2002: the synthesis of a new aromatic nanobelt that can be regarded as a nanotube segment (Povie et al. DOI). This blog has been covering loops, hoops, rings and belts before here, here Saturday 15 Apr 2017 11:59:57 A nitric acid cloud http://chem.vander-lingen.nl/articles/A nitric acid cloud/id/262/itemid/881 Nitric acid is a nasty chemical. One of those with the skull and bones logo as part of the EU classification 'very toxic' and to be handled with care in a laboratory setting. Two villages in Belgium have now first hand experience in dealing with a whole nitric acid cloud after a chemical tank acci Saturday 01 Apr 2017 18:14:24 Iron based photoluminescence http://chem.vander-lingen.nl/articles/Iron based photoluminescence/id/262/itemid/880 A new iron photo-luminescent compound has been reported in Nature (doi) by a twenty-seven people strong Swedish-Danish-US team with first author Pavel Chábera. In photoluminescence a compound absorbs light and then with a delay emits light again. Many inorganic compounds are known that exhibit this Saturday 01 Apr 2017 12:45:31 Paint spotting http://chem.vander-lingen.nl/articles/Paint spotting/id/261/itemid/879 Lately this blog has taken an interest in the arts. It was about time, otherwise it is just more science filling these pages. Paintings are an art form and the Ghent Altarpiece is an early one (completed in 1432). Away with all the chemistry, it was decided that this important masterpiece would be a Friday 24 Mar 2017 21:20:08 More hydrogen spotting http://chem.vander-lingen.nl/articles/More hydrogen spotting/id/261/itemid/878 In the image of the week we see actual deuterium atoms (in red) embedded in steel. The image was produced by Chen et al. as reported in Science (DOI). The presence of hydrogen in steel in general is a serious matter as it causes brittleness and ultimately nasty things like bridges collapsing Hydrog Saturday 04 Mar 2017 12:03:19 The biology of named reactions http://chem.vander-lingen.nl/articles/The biology of named reactions/id/260/itemid/877 Lin, McCarty and Liu have authored an interesting review in Angewandte titled "The enzymology of Organic Transformations" (DOI). It is of course well known that synthetic organic reactions exist with a biological enzymatic counterpart but this review exposes the true scale, especially for the so-cal Saturday 25 Feb 2017 12:15:33 CCN three minus http://chem.vander-lingen.nl/articles/CCN three minus/id/260/itemid/876 In the chemical zoo this week: CCN three minus, that is acetonitrile stripped of all its protons as reported by Jach et al. in The Angewandte (DOI). The recipe was unsurprisingly complex: a mixture of barium nitride (made from barium and nitrogen at 550K), elemental tantalum, sodium azide and graphi Thursday 09 Feb 2017 21:21:04 Wikipedians not amused http://chem.vander-lingen.nl/articles/Wikipedians not amused/id/260/itemid/875 The chemistry Wikipedians have had a difficult week! Someone pointed them in the direction of a paper that, although already published in 2016 took them by surprise. Titled "Glaring Chemical Errors Persist for Years on Wikipedia" in the Journal of Chemical Education and authored by Michel Mandler (D Sunday 05 Feb 2017 14:21:59 Metallic hydrogen http://chem.vander-lingen.nl/articles/Metallic hydrogen /id/259/itemid/873 This week Dias and Silvera have reported the discovery of metallic hydrogen in the journal Science and not without controversy (DOI). A diamond anvil cell was used to compress hydrogen gas at cryogenic temperatures and a record-high pressure. Problems to overcome were diamond tip failure and hydroge Friday 27 Jan 2017 22:50:42 Dark reactions http://chem.vander-lingen.nl/articles/Dark reactions/id/259/itemid/872 We can add a new chemical reaction database to our list of chemical reaction databases. See previous database coverage here. Not a brand new one, it has been around since 2016. This Haverford College initiative aims to use machine learning to predict the success of chemical reactions. This conce Thursday 26 Jan 2017 22:13:41