Synthesis And Characterization Of Lanthanide-Benzoata Complexes

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dc.contributor.authorOoi, Ping Howe
dc.date.accessioned2018-12-11T06:43:08Z
dc.date.available2018-12-11T06:43:08Z
dc.date.issued2011-10
dc.description.abstractSixteen complexes and three single crystals of lanthanide-benzoato were synthesized with normal refluxing and solvothermal method. The structures of the three crystals were characterized using single crystal X-ray crystallography. [Nd2(C7H5O2)6(C12H8N2)2], [Eu2(C7H5O2)6(C12H8N2)2􀁀􀃂2(C7H6O2)] and [Tb2(C7H5O2)6(C12H8N2)2􀁀􀃂2(C7H6O2) all adopted triclinic crystal system with P-1 space group. The three lanthanide-benzoato crystals adopted nine-coordination environment. Hydrogen bonding can be found showing the interaction between molecules in the crystals itself. All the complexes were characterized by means of elemental analysis, fourier transform infrared-red (FTIR) spectroscopy, thermogravimetric analysis and photoluminescence spectroscopy. The FTIR results show that the carboxylic group in the complexes coordinated to the rare earth ions in the form of monodentate and bidentate, and the ester carboxylic groups have taken part in the coordination. Nitrogen atoms from 1,10-phenanthroline coordinated to the rare earth ions in the single crystal complexes in the form of bidentate as well. Among these complexes, Eu(III) and Tb(III) complexes showed good photoluminescence emission compared with that of Sm(III) and Nd(III) complexes.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/7259
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectSynthesis and characterization ofen_US
dc.subjectchlorine-free polycyclotriphosphazeneen_US
dc.titleSynthesis And Characterization Of Lanthanide-Benzoata Complexesen_US
dc.typeThesisen_US
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