[en] Basic tellurium nitrate crystallizes in the space group Pnma with a = 14.607 (1), b = 8.801 (1), and c = 4.4633 (4) A. Full-matrix leastsquares refinement of automatic diffractometer data converged to a residual R = 0.036 (Rsub(w)=0.046) for 899 independent reflections. A detailed analysis of the structural data leads us to reformulate this compound as (Te₂O₄H)⁺(NO₃)^- with a basic structural element consisting of a charged two-dimensional puckered Te₂O₄H⁺ network with discrete NO₃^- anions, an example of a positively-charged network structure. (author)

[en] The final charge states of ions scattered to large angles (1⁰-18⁰) in Ar⁺-Kr and Kr⁺-Ar collisions have been measured for collision energies from 0.1 to 1.6 MeV. Both sets of data show stepwise increases in ionization beginning for those collisions having distances of closest approach of 0.7 and 0.4 a.u. For the smallest distances of closest approach reached (0.05 a.u.), the average number of electrons lost from the collision complex totals nearly twenty. Comparison with molecular orbital calculations shows possible electron promotions to exist for the 0.7 and 0.4 a.u. distances; however, comparison of the Ar-Kr and Kr-Ar data sets with the calculations shows that a variety of separated-atom states may participate in the promotions. This is in contrast to existing models for deeper-lying shells in which specific separated-atom-united-atom correlations are thought to exist. (orig.)