Results 81 to 90 of about 20,442 (252)
Interstellar HOCN in the Galactic center region [PDF]
, 2010 Aims. Our aim is to confirm the interstellar detection of cyanic acid, HOCN, in the Galactic center clouds. It has previously been tentatively detected only in Sgr B2(OH). Methods. We used a complete line survey of the hot cores Sgr B2(N) and (M) in the 3 mm range, complemented by additional observations carried out with the IRAM 30 m telescope at ...
arxiv +1 more source
Angewandte Chemie International Edition, Accepted Article.A one‐pot synthesis for previously unknown heavy homologues of group 9 metal carbynes [(Me3P)3CoºGeAr*] (1), [(Me3P)3RhºGeAr*] (2), [(Me3P)3IrºGeAr*] (3), [(Me3P)3IrºSnAr*] (5), and [(Et3P)3IrºPbAr*] (7) is presented [Ar* = C6H3‐2,6‐(Trip)2, Trip = 2,4,6‐C6H2iPr3]. During these preparations the tetrylidynes [(Me3P)3RhºSnAr*] (4), and [(Me3P)3RhºPbAr*] (
Lennart Gerhard Holzapfel +5 more
wiley +1 more source
Acta Crystallographica Section E: Crystallographic CommunicationsThe title complex, [Au(NCO)(C27H36N2)], was synthesized by ligand metathesis from [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]gold(I) chloride and sodium cyanate in anhydrous tetrahydrofuran and crystallized from toluene at 233 K in the ...
Abolghasem Bakhoda
doaj +1 more source
Oscillatory thermal instability - the Bhopal disaster and liquid bombs [PDF]
arXiv, 2011 Thermal runaway reactions were involved in the Bhopal disaster of 1984, in which methyl isocyanate was vented from a storage tank of the liquid, and occur in liquid peroxide explosions, yet to date there have been few investigations into the mechanism of thermal runaway in such liquid thermoreactive systems. Consequently protocols for storing thermally
arxiv
A high resolution study of complex organic molecules in hot cores [PDF]
, 2014 We present the results of a line identification analysis using data from the IRAM Plateau de Bure Inferferometer, focusing on six massive star-forming hot cores: G31.41+0.31, G29.96-0.02, G19.61-0.23, G10.62-0.38, G24.78+0.08A1 and G24.78+0.08A2. We identify several transitions of vibrationally excited methyl formate (HCOOCH$_3$) for the first time in ...
arxiv +1 more source
Advances in Metal‐Free Transamidation: A Sustainable Approach to Amide Bond Formation
Chemistry – An Asian Journal, EarlyView.This review highlights the recent developments of transamidation reactions under metal‐free reaction conditions. Various amines including weak nucleophilic amines such as aromatic amines have been used to achieve the transamidation reactions under mild and relatively green reaction conditions. Abstract The amide functionalities are a crucial functional
Niharan Sivaraj +2 more
wiley +1 more source
Thermo‐mechanical properties of flexible and rigid polyurethane (PU)/Cu composites
Polymer Composites, Volume 44, Issue 1, Page 401-412, January 2023., 2023 Synthesis of flexible and rigid polyurethane (PU)/copper composites and its thermal, mechanical properties analysis, and comparison. Abstract In this article, flexible and rigid polyurethane (PU)/copper (Cu) composites are prepared via a simple and cost‐effective solution casting process.
Patcharapon Somdee +2 more
wiley +1 more source
Technical lignin‐derived liquid polyols for flexible polyurethane foam in automotive seating
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract In this study, three different technical lignins from different biomass sources (softwood, hardwood, and wheat straw) and isolation processes (kraft, hydrolysis, and organosolv) were used to synthesize liquid lignin polyols by oxyalkylating lignin with propylene carbonate, a safe and environmentally friendly solvent.
Kevin Dunne +4 more
wiley +1 more source
ChemBioChem, EarlyView.In the nascent processes of the beginnings and evolution of life, nucleobases and especially purines, ribonucleos(t)ides and primitive RNAs have been continuously modified. A RNA‐peptide world and key metabolic pathways probably have emerged from the corresponding chemical modifications resulting from adenine deamination, purine alkylation and ...
Jean‐Luc Décout +1 more
wiley +1 more source
BioResourcesWooden structures are becoming increasingly popular in the construction world. However, these structures often rely on synthetic adhesives, raising concerns about the environmental risks associated with their chemical composition.
Alex Mary +5 more
doaj +2 more sources