Search results for "Azine"
showing 10 items of 1589 documents
CCDC 671674: Experimental Crystal Structure Determination
2011
Related Article: S.Shit, S.K.Dey, C.Rizzoli, E.Zangrando, G.Pilet, C.J.Gomez-Garcia, S.Mitra|2011|Inorg.Chim.Acta|370|18|doi:10.1016/j.ica.2011.01.008
CCDC 1423254: Experimental Crystal Structure Determination
2015
Related Article: Diego Rota Martir, Ashu K. Bansal, Vincent Di Mascio, David B. Cordes, Adam F. Henwood, Alexandra M. Z. Slawin, Paul C. J. Kamer, Laura Martínez-Sarti, Antonio Pertegás, Henk J. Bolink, Ifor D. W. Samuel, Eli Zysman-Colman|2016|Inorg.Chem.Front.|3|218|doi:10.1039/C5QI00177C
CCDC 680518: Experimental Crystal Structure Determination
2009
Related Article: A.Dobrov, V.B.Arion, S.Shova, A.Roller, E.Rentschler, B.K.Keppler|2008|Eur.J.Inorg.Chem.||4140|doi:10.1002/ejic.200800605
CCDC 164934: Experimental Crystal Structure Determination
2001
Related Article: H.Grove, J.Sletten, M.Julve, F.Lloret|2001|J.Chem.Soc.,Dalton Trans.||2487|doi:10.1039/b103588f
CCDC 247407: Experimental Crystal Structure Determination
2005
Related Article: J.Carranza, J.Sletten, C.Brennan, F.Lloret, J.Cano, M.Julve|2004|Dalton Trans.||3997|doi:10.1039/b412034p
CCDC 685749: Experimental Crystal Structure Determination
2009
Related Article: P.Gomez-Saiz, R.Gil-Garcia, M.A.Maestro, J.L.Pizarro, M.I.Arriortua, L.Lezama, T.Rojo, M.Gonzalez-Alvarez, J.Borras, J.Garcia-Tojal|2008|J.Inorg.Biochem.|102|1910|doi:10.1016/j.jinorgbio.2008.06.015
A new hydrogen bonding motif involved in self-recognition in the solid state by functionalised macrocycles
2011
Self-recognition within the crystal lattices of three functionalised macrocycles results in the formation of arrays of remarkably similar hermaphroditic pairs of macrocycles. In the case of two of the macrocycles containing acylhydrazine substituents, a hitherto unknown recognition pattern is found in the interaction of the hydrazine moiety with crown-ether oxygen atoms.
Structural, photophysical and magnetic properties of transition metal complexes based on the dipicolylamino-chloro-1,2,4,5-tetrazine ligand
2015
International audience; The ligand 3-chloro-6-dipicolylamino-1,2,4,5-tetrazine (Cl-TTZ-dipica) 1, prepared by the direct reaction between 3,6-dichloro-1,2,4,5-tetrazine and di(2-picolyl)-amine, afforded a series of four neutral transition metal complexes formulated as [Cl-TTZ-dipica-MCl2]2, with M = Zn(II), Cd(II), Mn(II) and Co(II), when reacted with the corresponding metal chlorides. The dinuclear structure of the isostructural complexes was disclosed by single crystal X-ray analysis, clearly indicating the formation of [MII–(μ-Cl)2MII] motifs and the involvement of the amino nitrogen atom in semi-coordination with the metal centers, thus leading to distorted octahedral coordination geome…
A Combined Experimental and Theoretical Study of the Ammonium Bifluoride Catalyzed Regioselective Synthesis of Quinoxalines and Pyrido[2,3-b]pyrazines
2015
International audience; Ammonium bifluoride was efficiently used (at a 0.5 mol % loading) to catalyze the cyclocondensation between 1,2-arylenediamines and 1,2-dicarbonyl compounds at room temperature in methanol-water, affording quinoxalines and pyrido[2,3-b]pyrazines in excellent yields. Importantly, 2,8-disubstituted quinoxalines and 3-substituted pyrido[2,3-b]pyrazines were regioselectively formed by reacting aryl glyoxals with 3-methyl-1,2-phenylenediamine and 2,3-diaminopyridine, respectively. Analysis of the DFT reactivity indices allowed to explain the catalytic role of ammonium bifluoride.
Radical cation and dication of a 4H-dithieno[2,3-b:3′,2′-e][1,4]-thiazine
2017
A p-tert-butylphenyl substituted 4H-dithieno[2,3-b:3′,2′-e][1,4]thiazine was synthesized by twofold Buchwald–Hartwig coupling. The electronic properties (UV/Vis, cyclic voltammetry and spectroelectrochemistry) and the DFT- and TD DFT-calculated electronic structure reveal that the parent system and the radical cation and dication oxidation products are highly polarizable π-systems with strong charge transfer contributions. The radical cation and the dication were prepared by oxidation with antimony(V) pentachloride, giving stable deeply colored salts. EPR spectroscopy of the radical cation furnishes hyperfine coupling constants with the nitrogen nucleus and the α-thienyl protons. The dicati…