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RESEARCH PRODUCT
Structural investigations on diorganotin and triorganotin(IV) phosphomycin derivatives.
Lorenzo PelleritoClaudia PelleritoLásló NagyMahmoud M.a. MohamedElisabetta ForestiTiziana FioreGirolamo CasellaMichelangelo Scopellitisubject
Lattice dynamicsPlanar networkChemistrySolid-statePOTENTIOMETRIC AND SPECTROPHOTOMETRIC TITRATIONSFT-IRInorganic ChemistryCrystallographyTrigonal bipyramidal molecular geometrySettore CHIM/03 - Chimica Generale E InorganicaORGANOTINMOSSBAUERMössbauer spectroscopyX-RAYMaterials ChemistryOrganotin FT-IR Mossbauer X-ray Potentiometric and spectrophotometric titrationsPhysical and Theoretical ChemistryCoordination geometrydescription
Abstract Four new diorganotin(IV), (R = Me, Bu), and triorganotin(IV), (R = Me, Ph), derivatives of the phosphomycin disodium salt antibiotic[(1R,2S)-1,2-epoxypropylphosphonate]Na2 have been synthesized and their solid state configuration studied by X-ray crystallography, FT-IR, Mossbauer, UV–Vis spectroscopies. The X-ray diffraction investigation, performed on the bis[trimethyltin(IV)]phosphomycin, showed that the coordination geometry at all the Sn atoms is trigonal bipyramidal. The structure of the complex forms an unusual polymeric zig-zag planar network. The FT-IR and the 119Sn Mossbauer studies supported the formation of trigonal bipyramidal (Tbp) molecular structures, both in the diorganotin(IV) and triorganotin(IV) derivatives, even if, in the case of diorganotin(IV) derivatives, the tetrahedral structure cannot be a priori excluded. The PO 3 2 - group of phosphomycin coordinates the organotin(IV) centers originating a monodimensional polymeric network, as inferred by variable temperature 119Sn Mossbauer spectroscopy, used to investigate lattice dynamics of the bis-[trimethyltin(IV)]phosphomycin complex.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-05-01 |