Journal ArticleDOI
Double electron-nuclear resonance of free radical 1,3-diphenyl-1, 4-dihydro-1,2,4-benzotriazin-4-yl
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The HFS constants for the protons in positions 5-13 of the free radical 1,3-diphenyl-1, 4-dihydro- 1,2,4-benzotriazin-4-yl were determined by the DENR method as mentioned in this paper.Abstract:
The HFS constants for the protons in positions 5–13 of the free radical 1,3-diphenyl-1, 4-dihydro-1,2,4-benzotriazin-4-yl were determined by the DENR method.read more
Citations
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Preparation of Blatter Radicals via Aza-Wittig Chemistry: The Reaction of N-Aryliminophosphoranes with 1-(Het)aroyl-2-aryldiazenes.
Anastasia C. Savva,Styliana I. Mirallai,Georgia A. Zissimou,Andrey A. Berezin,Marina Demetriades,Andreas Kourtellaris,Christos P. Constantinides,Constantinos Nicolaides,Theodossis Trypiniotis,Panayiotis A. Koutentis +9 more
TL;DR: Reacting N-aryliminophosphoranes with 1-(het)aroyl-2-aryldiazenes in preheated diphenyl ether at 150-250 °C for 5-25 min affords in most cases the 1,3-diaryl-1,4-dihydrobenzo[e][1,2,4]triazin-4-yls (aka Blatter radicals) in moderate to good yields.
Journal ArticleDOI
Recent advances in the chemistry of benzo[e][1,2,4]triazinyl radicals
TL;DR: This work surveys the various methods to synthesise and customise Blatter radicals, highlighting key developments in the last decade that have transformed their utility.
Journal ArticleDOI
Polymorphism in a π stacked Blatter radical: structures and magnetic properties of 3-(phenyl)-1-(pyrid-2-yl)-1,4-dihydrobenzo[e][1,2,4]triazin-4-yl
Christos P. Constantinides,Daniel B. Lawson,Georgia A. Zissimou,Andrey A. Berezin,Aaron Mailman,Maria Manoli,Andreas Kourtellaris,Gregory Leitus,Rodolphe Clérac,Heikki M. Tuononen,Panayiotis A. Koutentis +10 more
TL;DR: In this article, the first example of polymorphism in the family of Blatter radicals has been identified and characterized by single crystal X-ray diffractometry and magnetic susceptibility measurements to investigate their magnetism-structure correlations.
Journal ArticleDOI
Ferromagnetic interactions in a 1D Heisenberg linear chain of 1-phenyl-3,7-bis(trifluoromethyl)-1,4-dihydro-1,2,4-benzotriazin-4-yls
Christos P. Constantinides,Daniel B. Lawson,Andrey A. Berezin,Georgia A. Zissimou,Maria Manoli,Gregory Leitus,Panayiotis A. Koutentis +6 more
TL;DR: In this article, a 1D column of slipped π-stacked molecules along the crystallographic a-axis was characterized by single crystal X-ray diffractometry and variable temperature SQUID magnetometry to investigate its structure-magnetism correlation.
Journal ArticleDOI
1-(2-Methoxyphenyl)-3-phenyl-1,4-dihydro-1,2,4-benzotriazin-4-yl: a tricky “structure-to-magnetism” correlation aided by DFT calculations
Fadwat Bazzi,Alexander J. Danke,Daniel B. Lawson,Maria Manoli,Gregory Leitus,Panayiotis A. Koutentis,Christos P. Constantinides +6 more
TL;DR: In this article, the experimental magnetic susceptibility data are best interpreted in terms of an alternating antiferromagnetic Heisenberg linear chain model with A1Jexp = 2JA = −6.74 cm−1, A2Jexp= 2α JA = −2.70 cm− 1.
References
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Journal ArticleDOI
Über 1,4‐Dihydro‐1,2,4‐benzotriazinyl‐Radikale
TL;DR: In this article, a study of 1,4-Dihydro-1,2, 4-benzotriazinyl Radicals was conducted, in which a series of these radicals were prepared and studied in detail (chemical properties, IR, UV, etc.).
Journal ArticleDOI
Electron spin resonance studies of hydroxysemiquinone radicals. hydrogen-- deuterium isotope effects in intramolecular hydrogen bonds.
Journal ArticleDOI
Effects of Temperature and Deuterium Substitution on the Electron Spin Resonance Spectra of Free Radicals
M. R. Das,George K. Fraenkel +1 more
Journal ArticleDOI
1,4-Dihydro-1,2,4-benzotriazin-Radikalkationen
TL;DR: In this paper, the structure of the radical cations was confirmed by ESR studies of deuterated derivatives of 1.4-Dihydro-1,2,4-benzotriazinyl radicals in the presence of strong acids.