Search results for "PPE"

showing 10 items of 5871 documents

CCDC 723744: Experimental Crystal Structure Determination

2010

Related Article: A.Gonzalez-Alvarez, I.Alfonso, J.Cano, P.Diaz, V.Gotor, V.Gotor-Fernandez, E.Garcia-Espana, S.Garcia-Granda, H.R.Jimenez, F.Lloret|2009|Angew.Chem.,Int.Ed.|48|6055|doi:10.1002/anie.200901888

(mu~3~-359111517-Hexa-aza-1713(26)-tripyridina-41016(12)-tricyclohexanacyclooctadecaphane)-bis(mu~3~-hydroxo)-tri-copper(ii) dichloride diperchlorate pentahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 883708: Experimental Crystal Structure Determination

2013

Related Article: Julia R. Shakirova, Elena V. Grachova, Alexei S. Melnikov, Vladislav V. Gurzhiy, Sergey P. Tunik, Matti Haukka, Tapani A. Pakkanen, and Igor O. Koshevoy|2013|Organometallics|32|4061|doi:10.1021/om301100v

(mu~3~-tris(Diphenylphosphino)methane)-bis(mu~2~-eta^2^-3-hydroxy-33-diphenylprop-1-yn-1-yl)-bromo-(3-hydroxy-33-diphenylprop-1-yn-1-yl)-copper-tri-gold acetone solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 955946: Experimental Crystal Structure Determination

2013

(mu~3~-tris(Diphenylphosphino)methane)-bis(mu~2~-eta^2^-3-hydroxy-33-diphenylprop-1-yn-1-yl)-chloro-(3-hydroxy-33-diphenylprop-1-yn-1-yl)-copper-tri-gold acetone solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 955945: Experimental Crystal Structure Determination

2013

(mu~3~-tris(Diphenylphosphino)methane)-tris(mu~2~-eta^2^-cyclohexylethynyl)-copper-tri-gold hexafluorophosphate dichloromethane solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 711358: Experimental Crystal Structure Determination

2010

Related Article: E.Pardo, D.Cangussu, R.Lescouezec, Y.Journaux, J.Pasan, F.S.Delgado, C.Ruiz-Perez, R.Ruiz-Garcia, J.Cano, M.Julve, F.Lloret|2009|Inorg.Chem.|48|4661|doi:10.1021/ic900055d

(mu~4~-NN'-(14-Phenylene)-bis(oxamato))-tetrakis(bis(3-aminopropyl)amine)-tetra-copper(ii) tetraperchlorate dihydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 927862: Experimental Crystal Structure Determination

2013

Related Article: Walter Cañon-Mancisidor, Carlos J. Gómez-García, Guillermo Mínguez Espallargas, Andres Vega, Evgenia Spodine, Diego Venegas-Yazigi, Eugenio Coronado|2014|Chemical Science|5|324|doi:10.1039/C3SC52628C

(mu~6~-Fluoro)-bis(mu~3~-methoxo)-hexakis(mu~2~-35-dimethylpyrazolato)-(mu~2~-hydroxo)-bis(mu~2~-methoxo)-hexa-copperSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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Hard cap espresso extraction and liquid chromatography determination of bioactive compounds in vegetables and spices

2017

Abstract A new analytical procedure, based on liquid chromatography with diode array and fluorescence detection, has been proposed for the determination of bioactive compounds in vegetables and spices after hard cap espresso extraction. This novel extraction system has been tested for the determination of capsaicin and dihydrocapsaicin from fresh chilli and sweet pepper, piperine from ground pepper, curcumin from turmeric and curry, and myristicin from nutmeg. Extraction efficiency was evaluated by using acetonitrile:water and ethanol:water mixtures. The proposed method allows the extraction of samples with 100 mL of 60% (v/v) ethanol in water. The obtained limits of quantification for the …

01 natural sciencesMyristicaAnalytical ChemistryDihydrocapsaicinchemistry.chemical_compoundEspresso0404 agricultural biotechnologyVegetablesPepperSpicesChromatographybiologyChemistry010401 analytical chemistryExtraction (chemistry)Nutmeg04 agricultural and veterinary sciencesGeneral Medicinebiology.organism_classification040401 food scienceDiode array0104 chemical sciencesMyristicinPiperineCapsicumChromatography LiquidFood ScienceFood Chemistry

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ABSOLUTE THERMOELECTRIC POWER OF Pb–Sn ALLOYS

2011

International audience; In this work, absolute thermoelectric power (ATP) of Pb, Sn, Pb-20 wt.% Sn, Pb-40 wt.% Sn, Pb-60 wt.% Sn, Pb-80 wt.% Sn are measured. Measurements are performed in a temperature gradient furnace from 20 degrees C to 500 degrees C, for both solid and liquid states. Temperatures are measured with T-type copper-constantan thermocouples, while voltage signal between copper electrodes of those thermocouples is recorded in order to calculate ATP of the sample metal.

010302 applied physicsMaterials scienceAnalytical chemistryStatistical and Nonlinear Physics[CHIM.MATE]Chemical Sciences/Material chemistry02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter Physics7. Clean energy01 natural sciencesMetalCopper electrodeTemperature gradientThermocouplevisual_artSeebeck coefficient0103 physical sciencesvisual_art.visual_art_medium0210 nano-technologyVoltageModern Physics Letters B

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First copper(I) ferrocenyltetraphosphine complexes: possible involvement in Sonogashira cross-coupling reaction ?

2008

Preparation and characterization of the first examples of copper(I) ferrocenylpolyphosphine complexes are reported. The molecular structure of complex {P,P′,P′′-[1,1′,2,2′-tetrakis(diphenylphosphino)-4,4′-di-tert-butylferrocene]iodocopper(I)} (1) was solved by X-ray diffraction studies, and its fluxional behavior in solution was investigated by VT-31P NMR; both revealed a net triligated coordination preference of the ferrocenyl tetraphosphine Fc(P)4tBu with copper. The tetradentate ligand is an active auxiliary in Sonogashira alkynylation; therefore the general question of copper as a competitive coordination partner in the Pd/Cu-catalyzed Sonogashira reaction was raised and discussed. Elec…

010405 organic chemistryArylOrganic Chemistry[ CHIM.COOR ] Chemical Sciences/Coordination chemistrySonogashira couplingchemistry.chemical_element010402 general chemistry01 natural sciencesMedicinal chemistryCopperCoupling reaction0104 chemical sciencesCatalysisInorganic Chemistrychemistry.chemical_compoundchemistryPhenylacetyleneMolecule[CHIM.COOR]Chemical Sciences/Coordination chemistryPhysical and Theoretical ChemistryComputingMilieux_MISCELLANEOUSPalladium

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Photochemistry and Redox Chemistry of an Unsymmetrical Bimetallic Copper(I) Complex

2016

The bimetallic copper(I) complex Cu2L2 (cis-1) is formed with high diasteroselectivity from [Cu(NCCH3)4][BF4] and HL (4-tert-butyl phenyl(pyrrolato-2-yl-methylene)amine) in a kinetically controlled reaction. cis-1 features a rather short Cu···Cu distance of 2.4756(6) A and is weakly emissive at room temperature in solution. Oxidatively triggered disproportionation of cis-1 yields elemental copper and the mononuclear copper(II) complex CuL2 (trans-2). One-electron reduction of trans-2 gives cuprate [2]– with a bent bis(pyrrolato) coordinated copper(I) entity. The imine donor atoms of [2]– can insert an additional copper(I) ion giving exclusively the bimetallic complex cis-1 closing the oxida…

010405 organic chemistryChemistryIminechemistry.chemical_elementDisproportionation010402 general chemistryPhotochemistry01 natural sciencesRedoxCopper0104 chemical sciencesIonInorganic Chemistrychemistry.chemical_compoundAmine gas treatingCupratePhysical and Theoretical ChemistryBimetallic stripInorganic Chemistry

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