No abstract available

[en] Effect of strong electric fields on spatial and electronic structure of hydrate complexes of Li⁺, Na⁺, Be²⁺ and Mg²⁺ ions with one water molecule has been studied. It is shown that when determining orientation of ion-molecular complex as to field direction, the ion-molecule binding energy can increase by a factor of several times. The calculations are made in the approximation CNDO/2 and external electric field has been taken into account in clear form by the introduction of corresponding members of interaction of nuclei and valent electrons with the field into Hamiltonian

[en] Short note

[en] The results of use of infrared absorption spectra, NMR spectra and X-ray electron spectra are summarized to study the character of coordinational bonds in complexonates, Permitting to detect some features in the structure of beryllium complexonates

No abstract available

[en] New potentialities of the Gillespie-Nyholm model in the interpreparation of stereochemistry of nontransition elements (Be, B, In, Te, I, Xe among them) are demonstrated in the review on the basis of analyzing original reports of the last ten years. Anomalies in the structural chemistry of p-element compounds are discussed with regard to a certain limitedness of concepts of the model idealizing interelectron interactions

[en] Functionalized eggshell powder (NES) with nucleating surface of calcium phenylphosphonic acid (PPCa) for poly(L-lactide) (PLLA) was compounded with PLLA via melt blending to improve the cold crystallization process of PLLA. The cold crystallization behavior of the PLLA/NES composites was studied by differential scanning calorimetry. The isothermal cold crystallization rates have been enhanced obviously in the PLLA/NES composites than in the neat PLLA, indicative of the excellent nucleating effects of NES on PLLA. For the nonisothermal cold crystallization, the overall crystallization rate of PLLA increased with both increasing NES loadings and heating rate. It was found that the Avrami equation and the combined Ozawa–Avrami model could describe the experiment data successfully.

No abstract available

No abstract available

[en] The structures of barium diketonates depend on the way in which they are synthesized. It is shown that there is a correlation between the volatility of these compounds and their crystal structures. A new volatile mononuclear adduct of barium dipivaloylmethanate suitable for MOCVD is suggested. (orig.)