1,720,998 research outputs found
Caratterizzazione della superficie di materiali polimerici bioartificiali a base di collagene
No full textSyntheses, stereochemistry, and inclusion properties of new spirocyclophosphazenes
No full textThe syntheses and characterization of new spirocyclophosphazenes is reported. Variable-temperature n.m.r. measurements strongly suggest the presence of only one isomer for our compounds. Only tris-(3-methoxyphenyl-1,2-dioxy) phosphonitrile trimer has been found to form clathrate compounds with cyclohexene, n-heptane, and 1,2-dichloroethane
Syntheses And Characterization Of New Addition Complexes Of Tin Dichloride With Aromatic Schiff Bases
No full textNew addition complexes of tin dichloride with quadridentate Schiff bases have been obtained. Elemental analysis, IR and MS studies indicate the presence of 1:2 (ligand/SnCl2) adducts, which have an ionic structure. © 1983, Taylor & Francis Group, LLC. All rights reserved
Solid-solid interactions in the formation of new coordination compounds of tin dichloride with aromatic Schiff bases
No full textThe enthalpic and kinetic parameters associated with the solid-solid interactions between tin dichloride and some aromatic Schiff bases and successive thermal decompositions were evaluated. The results confirm a hypothesis of ionic-type structure for the adducts formed. © 1983
Esca studies on the structure of amorphous addition complexes of tin dichloride with aromatic schiff bases
No full textThe ESCA characterization of three similar new amorphous addition complexes of tin dichloride with tetradentate aromatic Schiff bases has been carried out. The results support the previously proposed ionic structure. © 1983
Characterization of new addition complexes of zinc iodide with β-ketommines
No full textAddition complexes of zinc iodide with Schiff bases prepared from β-diketones and isopropylamine have been obtained. Molecular weights in benzene indicate that the compounds are monomeric and stable in solution. Mass spectrometry, variable temperature 1H-NMR and IR studies suggest that these adducts may adopt a tetrahedral trans structure. © 1979
Rheological and calorimetric characterization of an epoxy system cured in presence of a reactive polyethersulphone
No full textThe isothermal degradation of some polyetherketones: a comparative kinetic study between long-term and short-term experiments
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Thermal behavior of epoxy resins cured with an amine-containing thermoplastic poly(arylene ether sulphone)
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