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dc.contributor.authorYousefi, Mohammad-
dc.contributor.authorEshtiagh-Hosseini, Hossein-
dc.contributor.authorMirzaei, Masoud-
dc.contributor.authorSalimi, Ali R.-
dc.contributor.authorNikpour, Mohsen-
dc.identifier.issn0975-0975(Online); 0376-4710(Print)-
dc.description.abstractThree new inorganic-organic hybrid materials based on heteropolyoxometalates, [L-C6H14NO2]3[(PO4)Mo12O36].3H2O (1), [L-C5H10NO2]3[(PO4)W12O36].H2O (2), and [C2H7N2O]3[(PO4)W12O36].4H2O (3), where C6H14NO2, C5H10NO2, and C2H7N2O are protonated l-leucine, l-proline, and methyl urea, respectively, have been synthesized and structurally characterized by some physico-chemical methods. Elemental analyses, IR, Raman, mass, UV, and 1H NMR spectroscopies of the title hybrid materials indicate that there are van der Waals interactions between O atoms of the heteropolyoxometalates and water molecules, as well as the N and O atoms of the amino acids and methyl urea moieties. The molecular structures of synthesized hybrid materials contain discrete entities of l-leucinium, l-prolinium or methyluronium and water molecules that surround every [(PO4)M12O36]3- anion, over the extended crystalline network. The observed bands in Raman spectra of (2) and (3) demonstrate that the [(PO4)W12O36]3- anion retains its “Keggin structure”. At pH = 4 – 7, the characteristic bands of the Keggin anion [(PO4)M12O36]3−(M = Mo, W) appear at 210 and 260 nm in the UV spectra, respectively.en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution- Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJC-A Vol.50A(01) [January 2011]en_US
dc.subjectInorganic-organic hybridsen_US
dc.subjectAmino acidsen_US
dc.subjectMethyl ureaen_US
dc.titleThree new inorganic-organic hybrid materials based on inorganic cluster, [(PO4)M12O36].nH2O (M = Mo, W)en_US
Appears in Collections:IJC-A Vol.50A(01) [January 2011]

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