Search results for " Organotin compounds"

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Structure ofD-ribonic acid-dimethyltin(IV) in coordinating solvents: an experimental and DFT119Sn NMR study

2006

We have investigated a newly synthesized complex of D-ribonic acid with dimethyltin(IV). The structure of the complex in solution has been characterized by means of 1 H, 13 C, and 119 Sn NMR and by DFT calculations. The comparison of experimental and computational results allowed the determination of the stable conformation in solution as well as the detection of a dimerization process. Moreover, evidence is given of active coordination of the metal by the solvent.

organotin compounds; ribonic acid; carbohydrate-metal complexes; 119Sn NMR; DFT calculationsChemistryOrganic Chemistrycarbohydratestin compoundstin-119carbohydrates; tin compounds; tin-119; NMR spectroscopy; computational chemistrycomputational chemistryMetalSolventNMR spectroscopyComputational chemistryvisual_art119Sn NMR Carbohydrate-metal complexes DFT calculations Organotin compounds Ribonic acidvisual_art.visual_art_mediumOrganic chemistryPhysical and Theoretical ChemistryJournal of Physical Organic Chemistry
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DFT calculation of 1J(119Sn,13C) and 2J(119Sn,1H) coupling constants in di- and trimethyltin(IV) compounds

2008

We have tested several computational protocols, at the nonrelativistic DFT level of theory, for the calculation of 1J(119Sn, 13C) and 2J(119Sn, 1H) spin-spin coupling constants in di- and trimethyltin(IV) derivatives with various ligands. Quite a good agreement with experimental data has been found with several hybrid functionals and a double-zeta basis set for a set of molecules comprising tetra-, penta-, and hexa-coordinated tin(IV). Then, some of the protocols have been applied to the calculation of the 2J(119Sn, 1H) of the aquodimethyltin(IV) ion and dimethyltin(IV) complex with D-ribonic acid and to the calculation of 1J(119Sn, 13C) and 2J(119Sn, 1H) of the dimethyltin(IV)-glycylglycin…

Carbon Isotopes; Dipeptides; Glycylglycine; Hydrogen; Organotin Compounds; Solvents; Tin; Trimethyltin Compounds; Water; Quantum Theorychemistry.chemical_elementInorganic ChemistryOrganotin(IV) DFT NMR relativistic effects tin couplingsComputational chemistryOrganotin CompoundsMoleculePhysical and Theoretical ChemistryBasis setCoupling constantCarbon IsotopesNMR tin derivatives coupling constantsTrimethyltin CompoundsbiologyGlycylglycineWaterDipeptidesbiology.organism_classificationHybrid functionalSolventchemistryTinSolventsQuantum TheoryTetraSolvent effectsTinHydrogen
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