Search results for "Pyrazine"

showing 10 items of 325 documents

High-dimensional malonate-based materials: Synthesis, crystal structures and magnetic properties of [M2(mal)2(L)(H2O)2]n·n(H2O) M = Zn(ii), Co(ii); H…

2003

Four novel coordination polymers [M2(mal)2(pym)(H2O)]n·nH2O, M = Zn (1), Co (2) and [M2(mal)2(pyz)(H2O)]n·nH2O, M = Zn (3), Co (4) (H2mal = malonic acid, pym = pyrimidine, pyz = pyrazine), have been synthesized. Compounds 1 and 2 are isomorphous, as are compounds 3 and 4. X-ray diffraction experiments reveal that 1–4 exhibit an interesting 3D-network, containing malonate and either pyrimidine (1 and 2) and pyrazine (3 and 4) as organic ligands. Variable-temperature magnetic susceptibility measurements indicate the occurrence of weak antiferromagnetic interactions between Co(II) ions in 2 and 4.

PyrimidinePyrazineStereochemistryGeneral ChemistryCrystal structureMalonic acidCondensed Matter PhysicsMagnetic susceptibilityIonchemistry.chemical_compoundCrystallographyMalonatechemistryAntiferromagnetismGeneral Materials ScienceCrystEngComm
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Long-range magnetic order in the porous metal–organic framework Ni(pyrazine)[Pt(CN)4]

2017

A combined study involving DFT calculations, neutron scattering, heat capacity and magnetic measurements at very low temperatures demonstrates the long-range magnetic ordering of Ni(pyrazine)[Pt(CN)4] below 1.9 K, describing its antiferromagnetic spin arrangement. This compound belongs to the family of porous coordination polymers M(pyrazine)[Pt(CN)4] (M = divalent metal), renowned for showing interesting combinations of porosity and magnetic properties. The possibility of including long-range magnetic ordering, one of the most pursued functional properties, opens new perspectives for the multifunctionality of this class of compounds.

Range (particle radiation)PyrazineChemistryMagnetic orderInorganic chemistryGeneral Physics and Astronomy02 engineering and technologyNeutron scattering010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesHeat capacity0104 chemical scienceschemistry.chemical_compoundCrystallographyAntiferromagnetismCondensed Matter::Strongly Correlated Electrons[PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]Physical and Theoretical Chemistry0210 nano-technologySpin (physics)PorosityComputingMilieux_MISCELLANEOUSPhysical Chemistry Chemical Physics
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CCDC 247405: 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

Space GroupCrystallography(2356-tetrakis(2-Pyridyl)pyrazine)-bis(cyanato)-copper(ii) hydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 294202: Experimental Crystal Structure Determination

2012

Related Article: F.S.Delgado, C.A.Jimenez, P.Lorenzo-Luis, J.Pasan, O.Fabelo, L.Canadillas-Delgado, F.Lloret, M.Julve, C.Ruiz-Perez|2012|Cryst.Growth Des.|12|599|doi:10.1021/cg200675u

Space GroupCrystallography(mu2-23-Di(pyridin-2-yl)pyrazine)bis(malonate)-di-copper(ii) nonahydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1405449: Experimental Crystal Structure Determination

2015

Related Article: Saoussen Haddad, Sarra Boudriga, François Porzio, Armand Soldera, Moheddine Askri, Michael Knorr, Yoann Rousselin, Marek M. Kubicki, Christopher Golz, and Carsten Strohmann|2015|J.Org.Chem.|80|9064|doi:10.1021/acs.joc.5b01399

Space GroupCrystallography1'2'3'8'9'10'10a'10b'-octahydro-2H2''H-dispiro[acenaphthylene-15'-dipyrrolo[12-a:2'1'-c]pyrazine-6'1''-acenaphthylene]-22''-dioneCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1062548: Experimental Crystal Structure Determination

2015

Related Article: I. Gryca, J. Palion-Gazda, B. Machura, M. Penkala, R. Kruszyński, J. Cano, F. Lloret, M. Julve|2015|Dalton Trans.|44|17118|doi:10.1039/C5DT02522B

Space GroupCrystallography22'-(36-di(pyridin-2-yl)pyrazine-25-diyl)di(pyridin-1-ium) hexachloro-rhenium(iv)Crystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 196108: Experimental Crystal Structure Determination

2004

Related Article: M.Nissinen, K.Rissanen|2003|Supramol.Chem.|15|581|doi:10.1080/10610270310001605179

Space GroupCrystallography281420-tetraethyl-46101216182224-octahydroxycalix(4)arene pyrazine clathrate ethanol solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 750746: Experimental Crystal Structure Determination

2009

Related Article: P.Koch, D.Schollmeyer, S.Laufer|2009|Acta Crystallogr.,Sect.E:Struct.Rep.Online|65|o2512|doi:10.1107/S1600536809037295

Space GroupCrystallography2-(4-Fluorophenyl)-3-(pyridin-4-yl)pyrido[23-b]pyrazineCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 918792: Experimental Crystal Structure Determination

2013

Related Article: Volker Schmitt, Sebastian Moschel, Heiner Detert|2013|Eur.J.Org.Chem.|2013|5655|doi:10.1002/ejoc.201300463

Space GroupCrystallography44'-((36-Diphenylpyrazine-25-diyl)diethene-21-diyl)bis(NN-dipropylaniline)Crystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 240027: Experimental Crystal Structure Determination

2005

Related Article: J.Carranza, H.Grove, J.Sletten, F.Lloret, M.Julve, P.E.Kruger, C.Eller, D.P.Rillema|2004|Eur.J.Inorg.Chem.||4836|doi:10.1002/ejic.200400500

Space GroupCrystallographyAqua-(oxalato-OO')-(23-bis(2-pyridyl)pyrazine)-copper(ii) monohydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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