0000000000349752

AUTHOR

Andrea Deák

showing 4 related works from this author

Preparation and structural studies on the tBu2Sn(IV) complexes with aromatic mono- and dicarboxylic acids containing hetero {N} donor atom

2004

Nine complexes of 'Bu2Sn(IV)(2+) were obtained in the solid state with ligands containing -COOH group(s) and aromatic (N) donor atom. The binding sites of the ligands were identified by FT-IR spectroscopic measurements. It was found that in most cases the -COO- groups are co-ordinated in monodentate manner. Nevertheless, in some of our complexes, the -COO- group forms bridges between two central {Sn} atoms resulting in the formation of an oligomeric structure, a motif that is characteristic only to the nicotinate compound. These pieces of information and the rationalisation of the experimental Sn-119 Mossbauer nuclear quadrupole splittings, Delta, - according to the point charge model forma…

DenticitygeometryX ray diffractionCrystal structureOrganotin(IV)nicotinic acid derivativeBiochemistryInorganic Chemistrycomplex formationMaterials ChemistryMoleculeorganotin compoundcontrolled studyPhysical and Theoretical Chemistryinfrared spectroscopychemical bindinghydrogen bondHydrogen bondChemistryMössbauer spectroscopybinding siteOrganic ChemistryarticleSquare pyramidal molecular geometryX-ray diffractionFT-IRtin derivativeTrigonal bipyramidal molecular geometryCrystallographyOctahedrondicarboxylic acidSettore CHIM/03 - Chimica Generale E Inorganicachemical structureMolecular modellingcarboxylic acidsynthesimolecular modelchemical analysiSingle crystal
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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 studies on diorganotin(IV) complexes of N-nitroso-N-phenylhydroxylaminates

2007

Abstract Diorganotin(IV)-complexes of the N -nitroso- N -phenylhydroxylaminates (hereinafter cupf), Et 2 Sn(cupf) 2 ( 1 ), Bu 2 Sn(cupf) 2 ( 2 ), {[Bu 2 Sn(cupf)] 2 O} 2 ( 3 ), t -Bu 2 Sn(cupf) 2 ( 4 ) and Oc 2 Sn(cupf) 2 ( 5 , 6 ) were prepared and characterised by FT-IR and Mossbauer spectroscopic measurements. The binding modes of the ligand were identified by FT-IR spectroscopy, and it was found that the ligand is coordinated in chelating or bridging mode to the organotin(IV) center. The 119 Sn Mossbauer and FT-IR studies support the formation of trans -O h ( 1 – 6 ) structures. The X-ray diffraction analysis of 4 revealed that the tin centre is in a skew-trapezoidal geometry defined by…

CupferronChemistryLigand1HOrganic Chemistrychemistry.chemical_elementNitrosoBiochemistryX-ray diffractionFT-IRMossbauerInorganic ChemistryCrystallographychemistry.chemical_compound13C and 119Sn NMR spectroscopyMössbauer spectroscopyX-ray crystallographyMaterials ChemistryCupferronChelationPhysical and Theoretical ChemistryTinSpectroscopyDiorganotin(IV)Journal 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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