ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Gas Complexes in the System MgCl2/ScCl3 and an Appendix on MCl2/ScCl3 (M = Ca, Sr, Ba)Mass spectroscopic measurements of the composition of the equilibrium-gas above MgCl2 + ScCl3 lead to the homogeneous equilibria given in “Inhaltsübersicht”.The combination of the dimers Mg2Cl4 and Sc2Cl6 to the complex MgScCl5 gives ΔH° ≈ zero. The same is true for the combination of the trimers Mg3Cl6 and Sc3Cl9 giving Mg2ScCl7 or MgSc2Cl8, respectively.In the systems MCl2/ScCl3 (M = Ca, Sr, Ba) the complex MScCl5 has been observed.
Notes:
Massenspektroskopische Messungen der Zusammensetzung des Gleichgewichtsgases über MgCl2 + ScCl3 führten zu den homogenen Gasgleichgewichten (Werte bei 298 K): \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c}{0,5\,{\rm Mg}_2 {\rm Cl}_4 + 0,5\,{\rm Sc}_2 {\rm Cl}_6 = {\rm MgScCl}_{5,{\rm g}};} \hfill & {\Delta{\rm H}^\circ = - \,0,7{\rm Kcal};\,\Delta{\rm S}^\circ = 2,0\,{\rm cl}} \hfill\\{{\rm MgCl}_2 + {\rm ScCl}_3 = {\rm MgScCl}_5;} \hfill & {\Delta{\rm H}^\circ = - 45,8\,{\rm Kcal};\,\Delta{\rm S}^\circ = - 28,2\,{\rm cl}} \hfill\\{{\rm Mg}_2 {\rm Cl}_4 + {\rm ScCl}_3 = {\rm Mg}_2 {\rm ScCl}_7;} \hfill & {\Delta{\rm H}^\circ = - 49,5\,{\rm Kcal};} \hfill\\{{\rm MgCl}_2 + {\rm Sc}_2 {\rm Cl}_6 = {\rm MgSc}_2 {\rm Cl}_8;} \hfill & {\Delta{\rm H}^\circ = - 49,4\,{\rm Kcal}.} \hfill\\\end{array} $$\end{document} Die Kombination der Dimeren Mg2Cl4 und Sc2Cl6 zum Komplex MgScCl5 führt ebenso zur ΔH°-Bilanz ≈ Null wie die Kombination der Trimeren Mg3Cl6 und Sc3Cl9 zu Mg2ScCl7 bzw. MgSc2Cl8.Auch in den Systemen MCl2/ScCl3 (M = Ca, Sr, Ba) tritt der Gaskomplex MScCl5 auf.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19794520112
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