Catalytic Properties of the Dioxomolybdenum Siloxide MoO2(OSiPh3)2 and its 2,2′-Bipyridine Adduct MoO2(OSiPh3)2(bpy). Abstract The tetrahedral triphenylsiloxy complex MoO2(OSiPh3)2 (1) and its Lewis base adduct with 2,2′-bipyridine, MoO2(OSiPh3)2(bpy) (2), were prepared and characterised by IR/Raman spectroscopy, and thermogravimetric analysis. Both compounds catalyse the epoxidation of cis-cyclooctene at 55 ºC using tert-butylhydroperoxide (t-BuOOH) is decane as the…
Modification of the luminescence properties of a europium(III tris(-diketonate) complex by inclusion in -cyclodextrin and 2,3,6-trimethyl–cyclodextrin s. Abstract A 1:1 inclusion compound between octakis(2,3,6-tri-O-methyl)-gamma-cyclodextrin (TRIMEG) and the chelate complex Eu(NTA)(3)center dot 2H(2)O (NTA = 1-(2-naphthoyl)-3,3,3-trifluoroacetonate) was prepared and characterized by powder X-ray diffraction, thermogravimetric analysis and photoluminescence spectroscopy. The results were compared with those obtained…
Immobilisation of methyltrioxorhenium on functionalised MCM-41. Abstract Methyltrioxorhenium (MTO) was immobilised in the mesoporous silica MCM-41 functionalised with a pyrazolylpyridine ligand. Elemental analysis indicated that the rhenium loading in the final material (3.6 wt.%, 0.19 mmol g−1) was about 35% of the ligand content. Powder X-ray diffraction confirmed that the regular hexagonal symmetry of the…
para-Halogenated Benzaldehyde Molecules included in Cyclodextrins: a combined thermogravimetric and spectroscopic study. Abstract The inclusion complexes of 4-X-benzaldehyde guests (X = F, Cl, Br) in alpha-, beta-and gamma-cyclodextrins (alpha CD, beta CD and gamma CD) were prepared and characterized by means of thermogravimetry, differential scanning calorimetry (DSC) and vibrational spectroscopy. The stoichiometry of the inclusion…
Experimental and Theoretical Study of the Encapsulation of a Linear Oligo(ferrocenylsilane) Trimer with b-cyclodextrin. Abstract An inclusion compound comprising β-cyclodextrin (β-CD) and the trimetallic oligo(ferrocenylsilane) FcSiMe2[(η5-C5H4)Fe(η5-C5H4SiMe2)]Fc [Fc = (η5-C5H5)Fe(η5-C5H4)] has been prepared and characterised in the solid state by elemental analysis, powder X-ray diffraction, thermogravimetric analysis and magic angle spinning NMR spectroscopy (13C, 29Si). The…
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