Results 71 to 80 of about 64,953 (273)

Pyridinium dichlorophosphinomethylides

Heteroatom Chemistry, 2001
AbstractSeven new pyridinium dichlorophosphinomethylides 2 have been obtained from dichlorophosphinylation of the pyridinium methylides generated in situ. 2 give 1,3‐bis(alkoxycarbonyl)‐2‐phosphaindolizines 4 through 1,5‐electrocyclization of the intermediate, bis(pyridinium ylidyl)phosphenium chloride 3 which is generated either from ...
Raj K. Bansal, Neelima Gupta, Mukta Baweja, Leena Hemrajani, Vimal K. Jain   +4 more
openaire   +1 more source

Near Infrared Photoswitching by Direct Excitation—A Next Frontier

Angewandte Chemie International Edition, EarlyView.
Molecular photoswitches finally enter the spectral realm of near‐infrared for their direct excitation. This minireview summarizes the current state‐of‐the‐art, the design principles for achieving such low‐energy light responsiveness, and the unique applications that are unlocked by it.
Diptiprava Sahoo, Elias Ciekalski, Henry Dube   +2 more
wiley   +1 more source

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, R. Akilan, R. Mohan Kumar, T. Ganesh, G. Chakkaravarthi   +4 more
doaj   +1 more source

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, Fouad Bentiss, Salaheddine Guesmi, Mohamed Saadi, Lahcen El Ammari   +4 more
doaj   +1 more source

Pyridinium dihydrogenphosphate

, 2017
Inelastic Neutron Scattering spectrum of Pyridinium dihydrogenphosphate, C₅H₈NO₄P, measured on the TFXA ...
C. B. Jasciezek, U. of Sussex, UK
core   +1 more source

Synthesis of a Stable Hydrophilic trans‐Cyclooctene Amino Acid Unlocks Fast Bioorthogonal Click Chemistry for the Generation of Antibody‐Drug Conjugates by Genetic Code Expansion

Angewandte Chemie International Edition, EarlyView.
A novel trans‐cyclooctene (TCO) based noncanonical amino acid (ncAA) is reported, characterized by high hydrophilicity and remarkable stability to trans‐cis isomerization. Its incorporation via genetic code expansion into an antibody and subsequent conjugation resulted in a highly efficacious antibody‐drug conjugate (ADC).
Georgi R. Genov, Dina Osmanović, Ines Bašić, Christine Koehler, Paul F. Sauter   +4 more
wiley   +1 more source

Push-pull systems based on pyridinium betaines.

, 2012
Byla provedena literarni rešerše mapujici využiti a synteticke postupy vedouci k push-pull systemům na bazi pyridinium betainů. Využiti těchto latek spočiva předevšim v jejich NLO vlastnostech.
Miklík, David
core   +1 more source

Crystal structure of pyridinium tetraisothiocyanatodipyridinechromium(III) pyridine monosolvate

Acta Crystallographica Section E: Crystallographic Communications, 2019
In the crystal structure of the title compound, (C5H6N)[Cr(NCS)4(C5H5N)2]·C5H5N, the CrIII ions are octahedrally coordinated by four N-bonding thiocyanate anions and two pyridine ligands into discrete negatively charged complexes, with the CrIII ion, as ...
Tristan Neumann, Inke Jess, Christian Näther   +2 more
doaj   +1 more source

Thermochemistry of Pyridinium Based Ionic Liquids with Tetrafluoroborate Anion [PDF]

, 2017
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimEnthalpies of vaporization of five pyridinium based ionic liquids (ILs): 1-R-pyridinium (with R = ethyl, butyl-, and hexyl), 1-butyl-3-methyl-pyridinium, and 1-butyl-4-methyl-pyridinium with ...
Zaitsau D., Verevkin S., Emel'yanenko V., Yermalayeu A., Schulz A.   +4 more
core  

Preferred gauche conformation in N-(2-aminoethyl)pyridinium ions

, 1984
X-ray analysis of 1-[(2S, 3S)-2-N,N-dibenzylamino-3-methyl-1-pentyl]pyridinium p-toluenesulphonate and 1-[(2S)-2-N,N-dibenzylamino-1-propyl]pyridinium p-toluenesulphonate reveals that in both compounds the central N---C---C---N moiety is in the syn ...
Jan A. Kanters, Frans B. Van Duijneveldt, Kanters, J.A., Roeland J.M. Nolte, Razenberg, J.A.S.J., Johannes A.S.J. Razenberg, Nolte, R.J.M., Drenth, W., Wiendelt Drenth, Duijneveldt, F.B. van   +9 more
core   +1 more source