Results 61 to 70 of about 36,949 (232)
3-(Ammoniomethyl)pyridinium dibromide [PDF]
Acta Crystallographica Section E Structure Reports Online, 2012 In the title salt, C(6)H(10)N(2) (2+)·2Br(-), the non-H atoms of the 3-methyl-pyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052 Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz.
Ali, Basem F. +2 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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2-(Hydroxymethyl)pyridinium chloride [PDF]
Acta Crystallographica Section E Structure Reports Online, 2008 In the title molecular salt, C(6)H(8)NO(+)·Cl(-), the packing is consolidated by N-H⋯Cl and O-H⋯Cl hydrogen bonds, resulting in the formation of [010] chains of alternating cations and anions.
Leigh Anna M. Ottley +2 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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2-(Dihydroxymethyl)pyridinium chloride [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 In the title compound, C(6)H(8)NO(2) (+)·Cl(-), inter-molecular O-H⋯Cl and N-H⋯Cl hydrogen bonds are observed in which each chloride anion links three adjacent cations into a hydrogen-bond network.
Hui-Fen Qian, Wei Huang
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Late‐Stage Functionalization of Peptides on the Solid Phase
Angewandte Chemie International Edition, EarlyView.Peptide modifications are essential to control pharmacodynamic and pharmacokinetic properties of peptide drugs. Consequently, strategies that allow for efficient and rapid incorporation of non‐canonical modifications into peptides in parallel formats are highly sought after.
Marius Werner +2 more
wiley +1 more source
New Constituents from the Korean Sponge Plakortis simplex
Marine Drugs, 2013 Six new cyclic peroxides (1–6) were isolated from the Korean sponge Plakortis simplex, along with two new alkylpyridinium alkaloids (7 and 8). The structures of these compounds were completely determined by a combination of NMR analysis and chemical ...
Ok-Hwa Kang +4 more
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2-[5-(Pyridin-2-yl)-1,3,4-thiadiazol-2-yl]pyridin-1-ium perchlorate
IUCrData, 2017 The cation of the title molecular salt, C12H9N4S+·ClO4−, is approximately planar, with the pyridine and pyridinium rings being inclined to the central thiadiazole ring by 6.51 (9) and 9.13 (9)°, respectively.
Abdelhakim Laachir +4 more
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Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT With the rapid development of the petrochemical industry, efficient separation technology for olefins and alkanes with the same number of carbon atoms has become an important research topic to enhance the efficiency of petroleum resource utilization and optimize product quality.
Shasha Zhao, Kang Zhao, Zhen Liu
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2-Aminopyridinium 2,4-dinitrophenolate
IUCrData, 2016 The asymmetric unit of the title organic salt, C5H7N2+·C6H3N2O5−, comprises two 2-aminopyridinium cations and two 2,4-dinitrophenolate anions. The cations are protonated at the pyridine N atoms, while the anions are deprotonated at hydroxyl O atoms.
S. Reena Devi +4 more
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