Search results for "dicarboxylic-acids"

showing 3 items of 3 documents

Preparation and structural characterization of organotin(IV) complexes with ligands containing a hetero {N} atom and a hydroxy group or hydroxy and c…

2005

AbstractTwenty-two n-butyltin(IV) and t-butyltin(IV) complexes of ligands containing an –OH (–C@O) group or –OH and –COOHgroups and an aromatic {N} donor atom were prepared by metathetical reactions. On the basis of the FT-IR and Mo¨ssbauer spec-troscopic data, molecular structures were assigned to these compounds. The binding sites of the ligands were identified by means ofFT-IR spectroscopic measurements, and it was found that in most cases the organotin(IV) moiety reacts with the phenolic form ofthese ligands. In the complexes with –OH and –COOH functions, the –COOH group is coordinated to the organotin(IV) centres in amonodentate manner. The 119 Sn Mo¨ssbauer and the FT-IR studies suppor…

2-MERCAPTOPYRIDINEStereochemistryMossbauer spectroscopyMETAL COMPLEXESchemistry.chemical_elementorganotin(IV)3-HYDROXYPYRIDINEBiochemistryMedicinal chemistryInorganic Chemistry2-HYDROXYPYRIDINEGroup (periodic table)Mössbauer spectroscopyMaterials ChemistryMoietyCRYSTAL-STRUCTURERAMAN-SPECTRAPhysical and Theoretical ChemistryBinding siteFourier transform infrared spectroscopyChemistryOrganic ChemistryX-ray diffraction DICARBOXYLIC-ACIDSFT-IRMODELTrigonal bipyramidal molecular geometryTINSettore CHIM/03 - Chimica Generale E InorganicaX-ray crystallographyTinOrganotin(IV)FT-IRMössbauer spectroscopyX-ray diffractionJournal of Organometallic Chemistry
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Preparation and structural characterization of Ph3Sn(IV)+ complexes with pyridinecarboxylic acids or hydroxypyridene, -pyrimidine and –quinoline.

2006

A number of [Ph3Sn(IV)](+) complexes formed with ligands containing -OH (-C=O), or -COOH group(s) and aromatic IN) donor atom have been prepared. The binding sites of the ligands were identified by FT-IR spectroscopic measurements. In the complexes containing hydroxy and carboxylate functions, the carboxylato group is coordinated to the organotin(IV) centres in monodentate or bridging bidentate manner. It was also found that in the hydroxypyridine and -pyrimidine complexes the [Ph3Sn(IV)]+ moiety in most cases reacts with the phenolic form of the ligands. The rationalisation of the experimental Sn-119 Mossbauer nuclear quadrupole splittings, vertical bar Delta(exp)vertical bar - according t…

DenticityPyrimidineStereochemistrytriphenyltin(IV)BiochemistryMedicinal chemistryInorganic ChemistryMossbauerchemistry.chemical_compound2-HYDROXYPYRIDINEPyridineMaterials ChemistryMoietyCarboxylatePhysical and Theoretical ChemistryCOORDINATIONDERIVATIVESOrganic ChemistryQuinolineX-ray diffraction DICARBOXYLIC-ACIDShydroxypyridine -pyrimidine and pyridinecarboxylato complexeFT-IRTrigonal bipyramidal molecular geometryOctahedronchemistryLIGANDS
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Organosulfates in atmospheric aerosol: synthesis and quantitative analysis of pm<sub>2.5</sub> from xi'an, northwestern c…

2018

Abstract. The sources, formation mechanism and amount of organosulfates (OS) in atmospheric aerosol are not yet well understood, partly due to the lack of authentic standards for quantification. In this study, we report an improved robust procedure for the synthesis of organosulfates with different functional groups. Nine authentic organosulfate standards were synthesized and four standards (benzyl sulfate, phenyl sulfate, glycolic acid sulfate, and hydroxyacetone sulfate) were used to quantify their ambient concentrations. The authentic standards and ambient aerosol samples were analyzed using an optimized ultra performance liquid chromatography–electrospray ionization-tandem mass spectrom…

Atmospheric Scienceparticulate organosulfates010504 meteorology & atmospheric sciences010501 environmental sciences01 natural scienceschemistry.chemical_compoundambient aerosolhaze eventsSulfateGlycolic acid0105 earth and related environmental sciencesDetection limitTotal organic carbondicarboxylic-acidsHydroxyacetonemass-spectrometryAerosolaromatic organosulfateschemistryEnvironmental chemistrychemical-compositionarctic aerosolsisopreneQuantitative analysis (chemistry)secondary organic aerosolOrganosulfate
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