975 resultados para mu-oxo ruthenium trinuclear complexes


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Contient : IBin hu mo xue ; IIMo jue kao zheng ; IIIQi jing ba mo kao ; IVBen cao gang mu

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Édition de 1735, imitée de celle de 1717 (Chinois 5264-5271, article I). Préfaces, table, avertissement, dédicace, introduction.3 livres de figures (manque le texte).

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Vie de la Sainte Vierge.Par le P. Vagnoni ; avec une introduction du P. Giacomo Rho, Jésuite (1590-1638 ; noms Chinois Luo Ya gu Wei shao). Réédition de l'église Da yuan à Canton (1680).3 livres.

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La somme théologique de saint Thomas, index.Impression de 1654. Livre préliminaire contenant une table générale qui indique la division de l'ouvrage en 3 sections :Livre 1 (1re section) de Dieu.Livre 2 (2e section, a) de la fin de l'homme, du bien qui concourt et du mal qui s'oppose à cette fin.Livre 3 (2e section, b) des vertus et des péchés contraires.Livre 4 (3e section) de l'incarnation et de la rédemption.Table détaillée en 4 livres.

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Explication de la salutation angélique.Par le P. Rho.37 feuillets.

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Petit office de la Sainte Vierge.Par le P. Buglio, avec autorisation du P. Lobelli : introduction de l'auteur (1676).61 feuillets.

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Contient : I入會奉事聖母經Ru hui feng shi sheng mu jing ; II聖母領報會小引Sheng mu ling bao hui xiao yin ; III規條Gui tiao ; IV聖母領報會大赦規條Sheng mu ling bao hui da sha gui tiao ; V入會禮儀Ru hui li yi

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Prière de saint Jean de Capistran à la Vierge.Version du P. Piñuela.13 feuillets.

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The objective of this thesis was to demonstrate the potential of fast atom bombardment mass spectrometry (FABMS) as a probe of condensed phase systems and its possible uses for the study of hydrogen bonding. FABMS was used to study three different systems. The first study was aimed at investigating the selectivity of the ligand tris(3,6-dioxaheptyl) amine (tdoha) for the alkali metal cations. FABMS results correlated well with infrared and nmr data. Systems where a crown ether competed with tdoha for a given alkali metal cation were also investigated by fast atom bombardment. The results were found to correlate with the cation affinity of tdoha and the ability of the crown ether to bind the cation. In the second and third studies, H-bonded systems were investigated. The imidazole-electron donor complexes were investigated and FABMS results showed the expected H-bond strength of the respective complexes. The effects of concentration, liquid matrix, water content, deuterium exchange, and pre-ionization of the complex were also investigated. In the third system investigated, the abundance of the diphenyl sulfone-ammonium salt complexes (presumably H-bonded) in the FABMS spectrum were found to correlate with qualitative considerations such as steric hindrance and strength of ion pairs.

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A number of metal complexes containing the ligand 5,5,7,12,12,14-hexamethyl-l,4,8,11-tetra-azatetradecane were synthesized and analyzed using electron impact (EI) and fast atom bombardment (FAB). The FAB mass spectra were obtained in positive and negative ion mode. FAB in the positive ion mode proved to be the most successful technique for the identification of these compounds. In the majority of cases the spectra obtained using positive ion FAB were structurally informative, although not all showed molecular (M+) or quasimolecular ([M+H]+) ions. The fragmentations observed were characteristic of the ligands, and were interpreted based on the chemistry of these compounds.

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Solid complexes of pyridoxine with Mn(II) , Cd(II) and Zn(II) have been isolated, as well as compounds containing Cu(II), Ni(II), Co(III), Cd(II) and Zn(II), and pyridoxamine in various protonated forms. Infrared spectra provide evidence for protonation at the pyridine nitrogen site in the complexes, but not in the neutral vitamins and the complexes of anionic pyridoxamine. Thus the complexed vitamins are in zwitterionic forms, with chelation probably occurring through the phenolate oxygen and either the amino or the hydroxy group at the 4' position.

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The capability of molecular mechanics for modeling the wide distribution of bond angles and bond lengths characteristic of coordination complexes was investigatecl. This was the preliminary step for future modeling of solvent extraction. Several tin-phosphine oxide COrnI)le:){es were selected as the test groUl) for t.he d,esired range of geometry they eX!libi ted as \-vell as the ligands they cOD.tained r Wllich were c\f interest in connection with solvation. A variety of adjustments were made to Allinger's M:M2 force·-field ill order to inl.prove its performance in the treatment of these systems. A set of u,nique force constants was introduced for' those terms representing the metal ligand bond lengths, bond angles, and, torsion angles. These were significantly smaller than trad.itionallY used. with organic compounds. The ~1orse poteIlt.ial energ'Y function was incorporated for the M-X l')ond lE~ngths and the cosine harmonic potential erlerg-y function was invoked for the MOP bond angle. These functions were found to accomodate the wide distribution of observed values better than the traditional harmonic approximations~ Crystal packing influences on the MOP angle were explored thr"ollgh ttle inclusion of the isolated molecule withil1 a shell cc)ntaini11g tl1e nearest neigl1'bors duri.rlg energy rninimization experiments~ This was found to further improve the fit of the MOP angle.