Die Massenspektren von Pd6Cl12, Pt6Cl12 und PdnPt6−nCl12

Mass Spectra of Pd₆Cl₁₂, Pt₆Cl₁₂, and Pd_nPt_6?nCl₁₂ Pd₆Cl₁₂, and Pt₆Cl₁₂ and both together are volatilised in a mass spectrometer. 3 Cl and 1 Pd have approximately the same mass, therefore isotopes of Pd and Pt are used (¹⁰⁸Pd, ₁₉₄Pt). With an ionisation energy of 50 eV part of the vapourised molecules is strongly fragmented. With a lower ionisation energy the molecule ions Pd₆Cl₁₂⁺, Pt₆Cl₁₂⁺ and Pd_nPt_6?nCl₁₂⁺ are only observed.     

Massenspektrometrische Messung der Stabilität der gasförmigen Komplexe MAl2Cl8 (M  Be,Fe, Zn,Cd, Pt) Der Zusammenhang der Stabilität der Gaskomplexe MAl2Cl8 mit den Koordinationszahlen im festen Dichlorid

Mass Spectrometric Measurements of the Stability of the Gaseous Complexes MAl₂Cl₈ (M ? Be, Fe, Zn, Cd, Pt). Connection between the Stability of the Complexes MAl₂Cl₈ and the Coordination of M and Cl in the Solid Dichloride The equilibria MCl_2,s + Al₂Cl_6,g ? MAl₂Cl_8,g mit (M ? Fe, Zn, Cd, Pt) have been measured by mass spectrometry (effusion from double cells). The corresponding equilibrium with BeCl₂ has been calculated from older measurements. All the ΔH° and ΔS° data of this type of reaction have been collected from the literature. A clear connection exists between the thermodynamic data and the coordination of M and Cl in the solid dichlorides.     

Die Stabilität von gasförmigem GeS2

Stability of Gaseous GeS₂ For the reaction the ΔH°(298) = 33 kcal (138kJ) has been determined. This value has been obtained from chemical transport reactions as well as from mass spectrometric und thermogravimetric observations.     

Darstellung und Stabilität von Aroxy-fluor-silanen

Preparation and Stability of Aroxy-fluoro-silanes. Different possibilities for preparation of aroxy-fluoro-silanes (esp. substituted phenoxy-fluoro-silanes) are investigated. The reaction was proved as the best method of preparation. The aroxy-fluoro-silanes are disposed to dismutation reactions.     

Bildung und Stabilität von gasförmigem AsOCl und SbOCl Massenspektrometrische Untersuchungen

Formation and Stability of Gaseous AsOCl and SbOCl. Mass Spectrometric Investigation The reaction of a AsCl₃/O₂ (Sb Cl₃/O₂) with silver at 1300 K leads to the high temperature molecules AsOCl (SbOCl). The heats of formation and ionisation potentials of these molecules have been determined (results see ?Inhaltsübersicht’?). The heats of atomisation and the ionisation potentials of the molecules NOCl, POCl, AsOCl, and SbOCl are discussed.     

Zur Stabilität der Metallkomplexe von Methantriessigsäure und cis,cis-1,3,5-Cyclohexantricarbonsäure

The stabilities of the Mn²⁺-, Co²⁺-, Ni²⁺-, Cu²⁺- and Zn²⁺-complexes with 2-(carboxymethyl)glutaric acid ( 2 ) and cis,cis-1,3,5-cyclohexanetricarboxylic acid ( 3 ) were measured potentiometrically at 25° and I = 0.5 (KNO₃). Beside the complexes ML^? protonated species MLH and MLH are also formed. Their stability constants are given in Table 1. A comparison between the stabilities of 2 or 3 and those of acetate, as a model for a monocarboxylate, or succinate and glutarate, as examples for dicarboxylates, indicates that in all species only one carboxylate is strongly bound whereas the second and third ones are probably not. The observation that Δlog K₁ = log K ? log K as well as Δlog K₂ = log K ? log K are practically constants with values of 0.34 ± 0.05 and 0.49 ± 0.07, respectively, for both ligands and the five metal ions studied is also in line with the proposed monodentate structures of the complexes ML^?, MLH and MLH.