NNNS chemistry blog http://chem.vander-lingen.nl Chemistry blog : news - comments - basics in chemistry en-us 1440 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 Pyramidal carbon http://chem.vander-lingen.nl/articles/Pyramidal carbon/id/259/itemid/871 Thanks to the New Scientist article here for reminding us but the discovery of a pyramidal carbon dication by Malischewski and Seppelt (DOI) must be the chemistry event of the last year (work published 26 November, yeah this blog missed it completely). It is common knowledge that carbon will partner Saturday 14 Jan 2017 18:47:17 Spot the hydrogen atoms http://chem.vander-lingen.nl/articles/Spot the hydrogen atoms/id/259/itemid/870 Does the phrase "hydrogen atoms omitted for clarification" sound familiar to you? It is the default text accompanying every crystal structure depiction. The reason? it may be that the presence of the hydrogen atoms is obvious so that there is no need to show them. The actual truth: the accuracy of t Friday 13 Jan 2017 19:14:05 New in carbon dioxide chemistry http://chem.vander-lingen.nl/articles/New in carbon dioxide chemistry/id/257/itemid/869 Charles S. may or may not be on Donald Trumps hitlist. As a scientist at Oak Ridge National Laboratory he works on carbon dioxide capture and Trump may think of him as one of those climate scientists. Oak Ridge is part of the United States Department of Energy that will soon have a new climate-scept Tuesday 27 Dec 2016 21:21:04 The synthesis robot http://chem.vander-lingen.nl/articles/The synthesis robot/id/257/itemid/868 We have been critical of Lee Cronin in the past here and here but the recent accomplishment of Kitson, Glatzel and Cronin (doi) as we shall see is remarkable: everything open-sourced! : publication medium (Beilstein J. Org. Chem.) - 3D-printer (RepRap)- printer API (Octoprint) - hardware (Ard Tuesday 20 Dec 2016 18:22:23 New in Barton decarboxylation http://chem.vander-lingen.nl/articles/New in Barton decarboxylation/id/257/itemid/867 Qin et al. have reported a new take on the classic Barton decarboxylation. This organic reaction is usually associated with Barton esters that have low stability and have a terrible smell. A similar ester based on N-hydroxyphthalimide was found with equally desired electron accepting properties. In Sunday 18 Dec 2016 16:47:21 Batrachotoxin total synthesis http://chem.vander-lingen.nl/articles/Batrachotoxin total synthesis/id/256/itemid/866 So why does my Twitter feed all of a sudden have these little yellow frogs? Must be an all-important new batrachotoxin (BTX) total synthesis? Yes, there it is: a Justin du Bois report in Science (DOI) about the compound made infamous by the poison dart frog! The toxicity of the compound excreted by Friday 18 Nov 2016 18:09:09 Next round in Diesel scandal http://chem.vander-lingen.nl/articles/Next round in Diesel scandal/id/255/itemid/865 In 2015 it was found that Volkswagen diesels were rigged to defeat NOx emissions tests. It resulted in a big scandal and Volkswagen will have to pay out a lot of money in damages. But is Volkswagen the only car brand with defeat devices that was ever caught? This week the Dutch government body respo Saturday 15 Oct 2016 15:04:07 Congratulations to Ben http://chem.vander-lingen.nl/articles/Congratulations to Ben/id/255/itemid/864 Congratulations to Ben Feringa! Of course Sauvage and Stoddart won the Nobel Prize in Chemistry as well but Ben is a fellow Dutchman. It makes him the fourth Dutchman to get the prize after Crutzen in 1995, Peter Debye in 1939 and 't Hoff in 1901 in on average 40 year intervals. It is also a true or Friday 07 Oct 2016 21:52:31