Chemistry Journal of Moldova. General, Industrial and Ecological Chemistry

8-25

Authors: Oxana Spinu, Igor Povar

The quantitative basis of the theory of buffer properties for two-phase acid-base buffer systems and for multicomponent heterogeneous systems has been derived. The analytical equations with respect to all components for diverse multicomponent systems were deduced. It has been established, that the buffer capacities of components are mutually proportional.

40-47

Authors: Masahiro Mikuriya, Mayu Hamagawa, Natsuki Tomioka, Daisuke Yoshioka, Naoko Uehara, Rika Fujimori, Hiroki Yamamoto, Yoshinari Ando, Shoichi Hori, Taro Kuriyama, Ryoji Mitsuhashi, Makoto Handa

Three kinds of copper(II) complexes with 1,4,7-tris(2-aminoethyl)-1,4,7-triazacyclononane (taetacn), [Cu(taetacn)](ClO4)2 (1), [Cu(Htaetacn)](ClO4)3 (2), and [Cu(Htaetacn)](BF4)3 (3) were synthesized and characterized by elemental analyses, IR and UV-Vis spectroscopies. The spectral features are in harmony with an octahedral geometry for 1 and a square-pyramidal coordination for 2 and 3.

54-57

Authors: Ion Dragalin, Olga Morarescu, Maria Sedcenco, Radu Marin Rosca

The accumulated as production waste fat from Faraon quail breeds has been investigated for the first time by using GC-MS technique, preventively converting it via methanolysis to fatty acid methyl esters. The test results, regarding the content of unsaturated fatty acids having a favorable to human body cis-configuration (77.8%), confirm their nutritional value and the possibility of using this fat in cosmetic, pharmaceutical and food industries.

62-67

Authors: Vsevolod Pogrebnoi

The reaction of (+)-D-glucose with 4-chloroaniline or 3,5-dibromoaniline leads almost exclusively to the β-configuration of glucosylated anilines. The acetylating of 2-(3,5-dibromophenylamino)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol is less selective than in case of the 2-(4-chlorophenylamino)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol.

77-88

Authors: Mohammad Taghi Taghizadeh, Morteza Vatanparast, Saeed Nasirianfar

Oxaziridine [c-CH3NO (X1A)], c-CH2NO (X2A) radicals and Cl, NH2 and methyl derivatives of oxaziridine structures have been optimized via DFTB3LYP level of theory using 6-311++G (d, p) basis set. Population analysis had been carried out. Vertical ionization energy (VIE) and adiabatic ionization energy (AIE), Fukui indices and some quantum chemical parameters were calculated. N-O bond was determined as weakest bond in oxaziridine triangle. The effect of electron withdrawing and electron donating groups on stability of weakest bond were assessed.

92-94

Authors: Irina Ginsari, Larisa Postolachi, Vasile Rusu, Oleg Petuhov, Tatiana Goreacioc, Tudor Lupascu, Raisa Nastas

Four series of samples containing manganese supported carbonaceous adsorbents were prepared. Obtained results reveal the importance of surface chemistry of carbonaceous adsorbents on the manganese loading.