6533b7dbfe1ef96bd126ff3a
RESEARCH PRODUCT
Organometallic complexes with biological molecules. I. Diorganotin(IV)chloro protoporphyrin IX complexes: Solid-state and solution-phase characterization
Fernanda RicchelliLorenzo PelleritoBenedetto SalvatoFrancesco MaggioA. PelleritoMariano Beltraminisubject
Protoporphyrin IXStereochemistrychemistry.chemical_elementInfrared spectroscopyGeneral ChemistryQuadrupole splittingInorganic Chemistrychemistry.chemical_compoundCrystallographyTrigonal bipyramidal molecular geometryMonomerchemistryMössbauer spectroscopyCarboxylateTindescription
Protoporphyrin IX (H4PPIX) complexes of diorganotin(IV)chloro moieties with formula (R2SnCl)2H2PPIX (RMe, Bu and Ph) have been obtained and their solid-state and solution-phase configurations have been studied through spectroscopic investigations. Coordination of the side-chain carboxylates of H4PPIX to R2Sn(IV)Cl moieties, with bridging carboxylate (COO−) has been inferred by comparison of the free and coordinated H4PPIX IR spectra, while the occurrence of a five-coordinated tin(IV) atom in a cis-R2 trigonal bipyramidal structure has been deduced, for all of the synthesized complexes, by rationalization of the nuclear quadrupole splitting parameters, according to the point-charge model formalism. Fanally, the solution-phase spectral features of (R2SnCl)2−H2PPIX are in agreement with the monomeric character of the protoporphyrin IX, under the experimental conditions used.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-04-01 | Applied Organometallic Chemistry |