Search results for "Methanol"

showing 10 items of 1026 documents

Acetone Vapor-Sensing Properties of Chitosan-Polyethylene Glycol Using Surface Plasmon Resonance Technique

2020

To non-invasively monitor and screen for diabetes in patients, there is need to detect low concentration of acetone vapor in the range from 1.8 ppm to 5 ppm, which is the concentration range of acetone vapor in diabetic patients. This work presents an investigation for the utilization of chitosan-polyethylene glycol (PEG)-based surface plasmon resonance (SPR) sensor in the detection of trace concentration acetone vapor in the range of breath acetone in diabetic subjects. The structure, morphology, and elemental composition of the chitosan-PEG sensing layer were characterized using FTIR, UV-VIS, FESEM, EDX, AFM, and XPS methods. Response testing was conducted using low concentration of aceto…

acetone vapor detectionMaterials sciencePolymers and Plasticsnon-invasivesurface plasmon resonance sensor02 engineering and technologyPolyethylene glycol01 natural sciencesArticlelcsh:QD241-441Propanolchemistry.chemical_compoundlcsh:Organic chemistryX-ray photoelectron spectroscopyAcetoneFourier transform infrared spectroscopySurface plasmon resonanceDetection limitdiabetes010401 analytical chemistrytechnology industry and agricultureGeneral Chemistry021001 nanoscience & nanotechnologychitosan-polyethylene glycol film0104 chemical scienceschemistryMethanol0210 nano-technologyNuclear chemistryPolymers

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Modeling for the active site nitrate reductase. Oxidation of the complex [MovO(O2CC(S) CH3Ph)2]− by nitrate and nitrite in methanol

1998

Abstract Under acid conditions the [MoVIO2(O2CC(S)CH1Ph)2]2 reacts with thiols to yield the monomeric [MoVO(O2CC(S)CH3Ph)2] and disulfide. The reduced complex [MoVO(O2CC(S)CH3Ph)2]− can react with NO3− and NO2− in a one-electron step yeilding respectively NO2 and NO and the original molybdenum (VI)-dioxo complex. The experimental pseudo-first-order rate constant with respect to the Mo(V) complex at 25°C was found to be kobs=2.3×10−4s−1 for NO3− and kobs=1.0×10−2 for NO2−. Oxo transfers to and from the substrate have been coupled to produce a catalytic system which turns over the reaction RSH+(No3− or NO2−)+H+a 1 2 [ RS ] 2 +( NO ] 2 or NO )+ H 2 O , in which thiols, NO1− and NO2− serve as a…

biologyInorganic chemistrySubstrate (chemistry)chemistry.chemical_elementActive siteNitrate reductaseMedicinal chemistryCatalysisInorganic Chemistrychemistry.chemical_compoundReaction rate constantchemistryMolybdenumMaterials Chemistrybiology.proteinMethanolPhysical and Theoretical ChemistryNitriteInorganica Chimica Acta

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trans-Bis(1H-benzimidazole-1-thione-κS)tetrachlorotellurium methanol disolvate

2002

The Te atom in the title complex, trans-[TeCl4(C6H4N2H2CS)2]·2CH4O or C16H20Cl4N4O2S2Te, occupies a special position at a crystallographic inversion centre and has an octahedral coordination formed by four chloro ligands and the S atoms of two benzimidazole–thione molecules. The hydrogen-bond system involving the disordered solvent methanol molecules links the tellurium complexes into the infinite two-dimensional aggregates in the crystal.

biologychemistry.chemical_elementGeneral ChemistryCondensed Matter Physicsbiology.organism_classificationMedicinal chemistryCrystalSolventchemistry.chemical_compoundchemistryOctahedronAtomTetraImidazoleGeneral Materials ScienceMethanolTelluriumActa Crystallographica Section E Structure Reports Online

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Study of [2-(2’-pyridyl)imidazole] complexes to confirm two main characteristic thermoanalytical behaviors of transition metal complexes based on imi…

2016

Abstract Imidazole derivative ligands are recognized as useful models for biomimetic complexes. Among the inorganic–organic hybrid complexes, those with derivatives of imidazole heterocyclic N-donor ligands are interesting for their framework. In previous studies of complexes with imidazole derivative ligands, our group reported two main thermally induced decomposition behaviors supporting two different systematic decomposition trends. In this work, one of these characteristic decomposition mechanisms was again found. The final goal of these serial studies is the possibility to provide, by the experimental evidences, a prediction model of thermal stability and decomposition typical behavior…

biomimetic complexes; EGA; imidazole derivative complexes; TG-MS; transition metal ion complexes; chemical engineering (all); chemistry (all)Evolved gas analysisInorganic chemistrytransition metal ion complexes02 engineering and technology010402 general chemistryMass spectrometry01 natural sciencesAnalytical Chemistrychemistry.chemical_compoundEGATransition metalPolymer chemistryImidazoleMoleculeThermal stabilitySettore CHIM/01 - Chimica Analiticabiomimetic complexesimidazole derivative complexes transition metal ion complexes biomimetic complexes EGA TG-MS021001 nanoscience & nanotechnologyimidazole derivative complexesDecomposition0104 chemical scienceschemistry (all)Fuel Technologychemical engineering (all)chemistryTG-MSMethanol0210 nano-technology

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CCDC 829874: Experimental Crystal Structure Determination

2012

Related Article: R.Inglis, E.Houton, Junjie Liu, A.Prescimone, J.Cano, S.Piligkos, S.Hill, L.F.Jones, E.K.Brechin|2011|Dalton Trans.|40|9999|doi:10.1039/c1dt11118c

bis((mu~3~-((Hydroxyimino)(phenyl)methyl)phenolato)-(mu~2~-pyridin-2-ylmethanolato))-tetrakis(2-((hydroxyimino)-(phenyl)methyl)phenolato)-di-manganese-di-zinc acetonitrile solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 172705: Experimental Crystal Structure Determination

2002

Related Article: M.Dey, C.P.Rao, P.K.Saarenketo, K.Rissanen|2002|Inorg.Chem.Commun.|5|380|doi:10.1016/S1387-7003(02)00407-0

bis((mu~3~-2-Methyl-2-(o-oxybenzylamino)propanolato)-(mu~2~-2-methyl-2-(o-hydroxybenzylamino)propanolato)-methanol-copper(ii)) diacetate methanol solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 270841: Experimental Crystal Structure Determination

2005

Related Article: J.-P.Costes, S.Shova, J.M.C.Juan, N.Suet|2005|Dalton Trans.||2830|doi:10.1039/b506102d

bis((mu~3~-2-Oxy-N-(((2-oxyphenyl)methylene)amino)-2-methylpropyl)benzamido)-dioxo-tetrakis(hexafluoroacetylacetonato)-bis(methanol)-di-gadolinium(iii)-di-vanadium(iv) acetone methanol solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 928582: Experimental Crystal Structure Determination

2013

Related Article: Sergiu Calancea, Dalice Pinero, David Poirot, Corine Mathoniere, Patrick Rosa, Rodolphe Clerac, Carolina Pejo, Raul Chiozzone,Francesc Lloret, Ricardo Gonzalez Hartje|2013|Polyhedron|64|294|doi:10.1016/j.poly.2013.05.021

bis((pyridine-26-diyl)bis((pyridin-2-yl)methanone))-iron bis(tetrafluoroborate) methanol solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 928581: Experimental Crystal Structure Determination

2013

bis((pyridine-26-diyl)bis((pyridin-2-yl)methanone))-iron bis(tetrafluoroborate) methanol solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 1491308: Experimental Crystal Structure Determination

2016

Related Article: Verónica Jornet-Mollá, Yan Duan, Carlos Giménez-Saiz, João C. Waerenborgh, Francisco M. Romero|2016|Dalton Trans.|45|17918|doi:10.1039/C6DT02934E

bis(26-bis(1H-pyrazol-3-yl)pyridine)-iron terephthalate methanol solvate monohydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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