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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 2 (1970), S. 25-36 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a examiné des complexes du type Mpy n X z (où M=Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+; py=pyridine,α-,Β- etγ-piccoline; X=Cl−, Br−, I−, OCN−, SCN−, NO 3 − , SO 4 2− ;n=2, 3, 4, 6;z=1, 2) dans le but de déterminer les facteurs ayant une influence sur la stabilité de la liaison métal-pyridine-N. Par mesure des susceptibilités magnétiques, on a pu établir dans la cas des complexes du Co2+ la sphère de coordination de l'atome central pour les phases intermédiaires produites par décomposition thermique.
    Abstract: Zusammenfassung Aufgrund derivatographischer Untersuchungen von Mischkomplexen des Typs MpynXz (M=Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+; py=Pyridin,α, Β undγ Piccolin; X=Cl−, Br−, I−, OCN−, SCN−, NO 3 − , SO 4 2− ;n=2, 3, 4, 6;z=1, 2) wurden die die StabilitÄt der Metall-Pyridin-N Bindung beeinflussenden Faktoren geprüft. Durch Messung der magnetischen SuszeptibilitÄten wurde die Symmetrie der KoordinationssphÄre des Zentralatoms des bei der thermischen Zersetzung entstehenden Kobalt(II)-komplexes ermittelt.
    Notes: Abstract On the basis of the thermal investigation of MpynX z mixed complexes (where M=Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+; py=pyridine; orα-, Β- andγ-picoline; X=Cl−, Br−, I−, OCN−, SCN−, NO 3 − , SO 4 2− ; andn=2,3,4,6;z=1,2), factors influencing the stability of the metal-pyridine-N bond have been determined. On the basis of the measured magnetic susceptibilities the symmetry of the coordina tion sphere of the central atom has been established in the intermediate products formed by the thermal decomposition of cobalt(II) complexes.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 38 (1989), S. 131-139 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Вторичные ионно-массовые спектры Pt-черни, экспонированные этиленом при 633 К, содержат кластеры PtC2H3, идентифицированные адсорбированным этилидином, подобно уже сссбщенному для поверхности монокристалла. Каталитические свойства Pt, подверженной предварительной обработке этиленом, в некотором отношении, являются лучшими в превращениях углеводородов, нежели для катализаторов содержащих другие, менее определенные карбокислые поверхностные слои.
    Notes: Abstract Secondary Ion Mass Spectra of Pt-black exposed to ethylene at 633 K contain a PtC2H3 cluster identified tentatively with adsorbed ethylidyne like that reported for single crystal surfaces. The catalytic properties of Pt pretreated by ethylene are, to some respect, superior in hydrocarbon transformations to those containing other, less defined carbonaceous overlayers.
    Type of Medium: Electronic Resource
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