Heats of solution of several protonic acids and bases in ethanol have been measured and the following order of their relative strengths is inferred: HSO3F>H2S2O7>H2SO4>HCOOH and sodium ethoxide > potassium ethoxide > piperidine >n-butylamine > benzylamine > morpholine > α-picoline > pyridine > quinoline. Major enthalpy change in the neutralization reactions is attributed to the combination of ethoxonium and ethoxy ions resulting in the formation of ethanol.
AbstractDiphenyltelluroxid (II) reagiert mit Sn(IV)‐, Ti(IV)‐ und Sb(V)‐chloriden unter Bildung von Diphenyltellurdichlorid (Ausb. 75‐80%), bildet aber mit den Aryltellurtrichloriden (I) die 2:1‐Addukte (III) quantitativ.
Vanadium(V) oxide, vanadium oxotrichloride and ammonium metavanadate solvolyse to the non-electrolyte H[VO(SO3Cl)4] in chlorosulphuric acid, whereas chromium dioxo-dichloride and potassium mono, and dichromates and chromium trioxide solvolyse to CrO2(SO3Cl)2. Polymerization of these species is indicated at higher concentrations. The solvolysed product CrO2(SO3Cl)2 has been isolated and characterized.
Diphenyl telluroxide, (DPTO), reacts with Sn(IV), Ti(IV) and Sb(V) chlorides to give diphenyltellurium dichloride, but with organotellurium trichlorides (R = Me, pMeOPh, pPhOPh) it forms 2:1 addition products. These products have been characterised by elemental analysis and IR spectra. The TeO vibrations in diaryl telluroxides have been assigned by comparing the IR spectra of diaryl telluroxides, diaryl tellurides and bis(diaryltellurium chloride)oxides (R = Ph, pMeOPh and pMePh).
AbstractInCl3 reagiert mit überschüssigem HSO3F nur bei Rückflußtemp.
UO2(SO3F)2, UO(SO3F)2, U(SO3F)4 and MU(SO3F)6, MMg, Zn have been prepared by reacting UO2(O2CCH3)2, U(O2CCH3)4, U(O2CCF3)4 and MU(O2CCH3)6 with HSO3F. The analysis of i.r. spectral data of UO2(SO3F)2, UO(SO3F)2 and MU(SO3F)6 shows the presence of only one type of SO3F group with reduced symmetry Cs. In U(SO3F)4, two SO3F groups are bidentate, while the other two are monodentate. A sharp band at 925 cm−1 in UO2(SO3F)2 is diagnostic of UO22+. The diffuse reflectance spectra of UO(SO3F)2, U(SO3F)4 and MU(SO3F)6 reveal hexacoordination of U(IV), while the magnetic moments of these compounds support the existence of U(IV). UO2(SO3F)2 and UO(SO3F)2 decompose thermally in a single step with the evolution of SO2F2 and formation of their respective sulphates.
AbstractDie neuen Fluorosulfate (III) und (VI) werden)wie im Formelschema skizziert, dargestellt.