Results 41 to 50 of about 732,397 (247)

Tetrapyridinium μ-oxido-di-μ-sulfato-bis[chloridodioxidomolybdate(VI)]

Acta Crystallographica Section E, 2010
The title salt, (C5H6N)4[Mo2Cl2O5(SO4)2], comprises four pyridinium cations for each [(MoClO2)2(μ-O)(μ-SO4)2]4− anionic unit. The asymmetric unit consists of three aggregates of the empirical formula.
José A. Fernandes, Ana C. Gomes, Sónia Figueiredo, Sandra Gago, André D. Lopes, Martyn Pillinger, Paulo J. A. Ribeiro-Claro, Isabel S. Gonçalves, Filipe A. Almeida Paz   +8 more
doaj   +1 more source

Bis(4,4′-bipyridin-1-ium) cis-bis(1,2-dicyano-2-sulfidoethene-1-sulfinato-κ2S,S′)platinate(2−)

IUCrData
Crystals of the sulfinate-containing platinate salt, (C10H9N2)2[Pt(C4N2O2S2)2], were obtained from a solution of [Pt(4,4′-bpy)2(mnt)] after a long period with minimal light (4,4′-bpy is 4,4′-bipyridine and mnt is maleonitriledithiolate). In the crystals,
Claire E. Welton, Eric W. Reinheimer, Bradley W. Smucker   +2 more
doaj   +1 more source

Asymmetric Hydrogenation of 3‐Substituted Pyridinium Salts

Chemistry – A European Journal, 2016
AbstractThe use of an equivalent amount of an organic base leads to high enantiomeric excess in the asymmetric hydrogenation of N‐benzylated 3‐substituted pyridinium salts into the corresponding piperidines. Indeed, in the presence of Et3N, a Rh‐JosiPhos catalyst reduced a range of pyridinium salts with ee values up to 90 %.
M. Renom-Carrasco, GAJEWSKI, PIOTR, PIGNATARO, LUCA LUIGI, J. De Vries, U. Piarulli, C. Gennari, L. Lefort   +6 more
openaire   +4 more sources

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

2-Amino-3-(hydroxymethyl)pyridinium 2-benzoylbenzoate monohydrate

Acta Crystallographica Section E, 2012
In the title hydrated salt, C6H9N2O+·C14H9O3−·H2O, the dihedral angle between the benzene rings of the 2-benzoylbenzoate anion is 82.04 (14)°, while the angles between the aromatic ring of the pyridinium ...
Mustafa Odabaşoğlu, Osman Ozan Avinç, Hakkı Yasin Odabaşoğlu, Orhan Büyükgüngör   +3 more
doaj   +1 more source

Multidimensional and Multifunctional Laser‐Induced Graphene (LIG) for Point‐of‐Care and Wearable Biosensing, Theranostics, and Bioactive Interfaces Toward Personalized Healthcare and Regenerative Medicine

Advanced Science, EarlyView.
Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang, Yurou Yuan, Xiaohong Ding, Wing Cheung Mak   +3 more
wiley   +1 more source

Reversible Exfoliation‐Aggregation Dynamics in Ionic COFs for Tunable Interfacial Catalysis

Advanced Science, EarlyView.
A unique ionic covalent organic framework (I‐4) exhibits unprecedented concentration‐dependent dynamic behavior in water, undergoing reversible transitions between aggregation and exfoliation. This enables fully controllable, bidirectional modulation of its particle size and surface micro‐environment.
Jilu Yang, Xiaofei Zhang, Yue Li, Yuping Cao, Zhaowei Jia, Bo Li, Haitao Feng, Xiaoqiang Cui, Wenwu Qin   +8 more
wiley   +1 more source

Pyridin-1-ium carboxyformate–2-chloroacetic acid (1/1)

IUCrData
The asymmetric unit of the title salt co-crystal, C5H6N+·C2HO4−·C2H3ClO2, comprises a pyridinium cation, a carboxyformate anion and a 2-chloroacetic acid molecule.
Nurlana D. Sadikhova, Farida M. Muradova, Narmina A. Guliyeva, Khudayar I. Hasanov, Tahir A. Javadzade, Ennio Zangrando, Alebel N. Belay   +6 more
doaj   +1 more source

2-(1H-Pyrazol-3-yl)pyridinium chloride monohydrate

Acta Crystallographica Section E, 2009
The title organic salt, C8H8N3+·Cl−·H2O, exhibits a rich hydrogen-bonding network involving all constituent species. The water molecules are engaged in strong O—H...Cl interactions with the chloride anions, two ...
Tatiana R. Amarante, Isabel S. Gonçalves, Filipe A. Almeida Paz   +2 more
doaj   +1 more source

4-Cyanopyridinium chloride

Acta Crystallographica Section E, 2012
In the crystal structure of the title salt, C6H5N2+·Cl−, the pyridinium cation links to the Cl− anion via an N—H...Cl hydrogen bond. Weak C—H...Cl interactions also occur.
Wen-Ni Zheng
doaj   +1 more source