Results 41 to 50 of about 76,223 (304)
The ALMA-PILS survey: Complex nitriles towards IRAS 16293--2422 [PDF]
A&A 616, A90 (2018), 2018 Complex organic molecules are readily detected in the inner regions of the gaseous envelopes of forming protostars. In particular, molecules that contain nitrogen are interesting due to the role nitrogen plays in the development of life and the compact scales such molecules have been found to trace around forming protostars. The goal of this work is to
arxiv +1 more source
Molecules, 2012 In the presence of trifluoromethanesulfonic acid (TfOH) or bis(trifluoromethane-sulfonyl)imide (Tf2NH), iodosobenzene (PhI=O) efficiently promoted the reactions of dicarbonyl compounds as well as monocarbonyl compounds with nitriles to give 2,4 ...
Yuji Hanzawa, Akio Saito, Nao Hyodo
doaj +1 more source
ChemistryOpen, 2022 The access towards chiral nitriles remains crucial in the synthesis of several pharmaceuticals. One approach is based on metal‐catalyzed dehydration of chiral aldoximes, which are generated from chiral pool‐derived aldehydes as substrates, and the use of
Jannis Nonnhoff +1 more
doaj +1 more source
The role of C/O in nitrile astrochemistry in PDRs and planet-forming disks [PDF]
, 2019 Complex nitriles, such as HC3N, and CH3CN, are observed in a wide variety of astrophysical environments, including at relatively high abundances in photon-dominated regions (PDR) and the UV exposed atmospheres of planet-forming disks. The latter have been inferred to be oxygen-poor, suggesting that these observations may be explained by organic ...
arxiv +1 more source
Thermomechanical properties of zirconium tungstate/hydrogenated nitrile butadiene rubber (HNBR) composites for low-temperature applications [PDF]
J Mater Sci (2016) 51: 10714, 2017 Rubber compounds for pressure sealing application typically have inferior dimensional stability with temperature fluctuations compared with their steel counterparts. This effect may result in seal leakage failures when subjected to decreases in temperature. Composites of hydrogenated nitrile butadiene rubber (HNBR) and zirconium tungstate as a negative
arxiv +1 more source
X-ray structures of dinuclear copper(I) and polynuclear copper(II) complexes with the 2,4-bis(cyanamido)cyclobutane-1,3-dione dianion [PDF]
, 2006 From the 2,4-bis(cyanamido)cyclobutane-1,3-dione dianion (2,4-NCNsq2−), two copper complexes [Cu2(PPh3)4(PhCN)2(μ-2,4-NCNsq)] · PhCN (1) and [Cu(dien)(μ-2,4-NCNsq) · H2O]n (2) have been synthesized and characterized by IR and electronic absorption ...
Cortadellas, Olivier +4 more
core +2 more sources
Molecules, 2022 In the field of drug discovery, the nitrile group is well represented among drugs and biologically active compounds. It can form both non-covalent and covalent interactions with diverse biological targets, and it is amenable as an electrophilic warhead ...
Simone Brogi +6 more
doaj +1 more source
Plastic-crystalline solid-state electrolytes: Ionic conductivity and orientational dynamics in nitrile mixtures [PDF]
J. Chem. Phys. 150 (2019) 244507, 2019 Many plastic crystals, molecular solids with long-range, center-of-mass crystalline order but dynamic disorder of the molecular orientations, are known to exhibit exceptionally high ionic conductivity. This makes them promising candidates for applications as solid-state electrolytes, e.g., in batteries.
arxiv +1 more source
Surface amination of poly(acrylonitrile) [PDF]
, 1994 The surface amination of poly (acrylonitrile) by ammonia plasma treatment has been studied. Furthermore, two other surface modification techniques have been investigated, the plasma chemical decomposition of an amino group containing chemical (tris-(2 ...
Hartwig, Andreas +2 more
core +2 more sources
Origin of Life Molecules in the Atmosphere After Big Impacts on the Early Earth [PDF]
arXiv, 2023 The origin of life on Earth would benefit from a prebiotic atmosphere that produced nitriles, like HCN, which enable ribonucleotide synthesis. However, geochemical evidence suggests that Hadean air was relatively oxidizing with negligible photochemical production of prebiotic molecules.
arxiv