Results 51 to 60 of about 73,143 (258)
Pyridinium 4-(trifluoromethyl)benzenesulfonate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2009 The title salt, C(5)H(6)N(+)·C(7)H(4)F(3)O(3)S(-), is an ion pair in which the pyridium cation is linked to the 4-(trifluoro-meth-yl)benzene-sulfonate anion by an N-H⋯O hydrogen bond. The F atoms of the trifluoro-methyl group are disordered over two sites in a 0.584 (9):0.416 (9) ratio.
Gang Chen, Wei Xu, Zhen Yang, Zheng Fan
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Angewandte Chemie, EarlyView.Coordination of a Lewis base switches an electron‐accepting tricoordinate boron center into an electron‐donating tetracoordinate one. An alkenyl‐strapped diphenylthienylboryl π‐system undergoes phosphine‐induced reversible π‐umpolung, where transformation from an acceptor–acceptor–acceptor framework to a donor–acceptor–donor system gives rise to ...
Satoru Kitamura +2 more
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2-(Benzoylaminomethyl)pyridinium chloride [PDF]
Acta Crystallographica Section E Structure Reports Online, 2008 The title compound, C(13)H(13)N(2)O(+)·Cl(-), (1), was obtained as a colorless crystalline by-product during the synthesis of N-(2-pyridylmeth-yl)benzoyl-amine (2). The C-O bond length of 1.231 (2) Å in the benzoyl unit of (1) is slightly elongated in comparison with isolated C=O double bonds as also observed for (2) [1.237 (2) Å].
Matthias Westerhausen +2 more
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Angewandte Chemie, EarlyView.DFT computation, AIMD simulations, machine learning, statistical analysis, and experimental characterization reveal that the upper limit of Al inclusion in FAU zeolite synthesized under hydrothermal conditions is determined by the encapsulated non‐exchangeable Na+ ions.
Qi Dong +8 more
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Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title salt, C24H22N4O42+·2NO3−, the cation is U-shaped with the two isoindole dione rings inclined to one another by 60.41 (13)°, while the two outer pyridine rings are inclined to one another by 2.77 (12)°.
Zhimin Liu
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The cycloauration of pyridine-2-thiocarboxamide ligands [PDF]
, 2010 Reactions of H[AuCl₄] with N-substituted 2-pyridine thiocarboxamide ligands 2-(C₅H₄N)C(S)NHR (R= p-C₆H₄Me, CH₂Ph, Me, p-C₆H₄OMe) gave cycloaurated derivatives {(C₅H₄N)C(S)NR}AuCl₂, with the ligand bonded as the thiol tautomer through the deprotonated SH ...
Henderson, William +2 more
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Tailoring the Properties of Functional Materials With N‐Oxides
Advanced Functional Materials, EarlyView.The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich +5 more
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Molecules, 2012 The <em>trans</em>-selective catalytic asymmetric formation of β-lactones constitutes an attractive surrogate for <em>anti</em>-aldol additions.
René Peters +4 more
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Theoretical Analysis of the Heterocyclic [4+2] Cycloaddition Between Pyridinium Ion and Enol Ether
ChemistryOpen, 2021 Dearomative heterocyclic [4+2] cycloaddition between the N‐(2,4‐dinitrophenyl)pyridinium ion of nicotinamide and an enol ether was analyzed by Density Functional Theory (DFT) calculations.
Masataka Nakahara +3 more
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Bio‐Inspired Molecular Events in Poly(Ionic Liquids)
Advanced Functional Materials, EarlyView.Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
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