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  • Functionalized polyoxomolybdates  (1)
  • autonomy  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Molecular engineering 3 (1993), S. 79-91 
    ISSN: 1572-8951
    Schlagwort(e): Functionalized polyoxomolybdates ; lacunary nitrosyloxopentamolybdate ; nitrosyl complexes ; Lindqvist-type anions ; Keggin-type anions ; mixed valence compounds ; organometallic oxides ; amidoximes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Nitrosyl derivatives of polyoxomolybdates have been synthesized and characterized by X-ray diffraction. Most of them contain the MoII(NO)3+ unit and their structures are related to the following structural types: Lindqvist, Keggin and decatungstate [W10O32]4−. Reductive nitrosylation of (NBu4)4[α-Mo8O26] by hydroxylamine in methanol yields (NBu4)2[Mo5O13(OMe)4(NO){Na(MeOH)}]. 3MeOH, which is a versatile reagent yielding a variety of derivatives (i) by the transformation of [Mo5O13(OMe)4(NO)]3− into [Mo6O18(NO)]3− in acetonitrile, (ii) by the formation of [PMo12O39(NO)]4− by reaction of [Mo5O13(OMe)4(NO)]3− with [PMO12O40]3− in basic condition and (iii) by the formation of mixed valence MoVI/MoV/MoII decamolybdates [Mo10O24(OMe)7(NO)]2−, [Mo10O25(OMe)6(NO)]− and [Mo10O20(OMe)9(NO)3]2− by chemical reduction of [Mo5O13(OMe)4(NO)]3−; MoII is localized while MoV are delocalized in the first two species but localized in the third. The unique ligating properties of [Mo5O13(OMe)4(NO)]3− have been documented: this species acts as a tetradentate ligand in [Ce{Mo5O13(OMe)4(NO)}2]2−, a symmetrically tetraligating ligand in [Rh2Cp*2(μ-Br){μ-Mo5O13(OMe)4(NO)}] and a bidentate ligand in [Mo5O13(OMe)4(NO){RhCp*(H2O)}]−. Some polyoxomolybdates of the type [Mo5(NO)2O12{RC(NH2)NHO}2{RC(NH)NO}2]2−, which contain the Mo0(NO) 2 2+ unit, have also been characterized.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1573-2649
    Schlagwort(e): Asthma ; health status measurement ; quality of life ; compliance ; autonomy ; decision making
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The Asthma Quality of Life Questionnaire (AQLQ) is a well-validated instrument. Our objectives were to explore the cross-sectional validity of the French version, using usual outcomes of asthma, as well as assessment of knowledge of asthma, self-management and compliance. A self-administered version of the AQLQ was given to 124 consecutive patients recruited from two out-patient clinics and an emergency room in order to reflect a wide range of asthma severity. The other outcomes of asthma measured were the FEV1, patient-perceived asthma severity using a visual analogue scale, compliance, knowledge of asthma condition and self-management autonomy. Correlations were predicted before analysis (+++ r 〉 0.5, strong correlation, ++ r = 0.35–0.5, moderate correlation and + r = 0.20–0.35, fair correlation). The AQLQ scores correlated moderately to strongly with asthma severity and fairly with the pulmonary function results. Of the behavioural outcomes assessed, only knowledge of asthma correlated fairly with the AQLQ scores, as expected. This study of the French version of the AQLQ, while showing similar cross-sectional correlations with functional assessment and asthma severity to those observed with the original English version, suggested in addition a positive association between quality of life and knowledge of asthma.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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