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1.
G. Gioia Lobbia G. Berchiesi M. A. Berchiesi 《Journal of Thermal Analysis and Calorimetry》1977,12(3):449-454
The liquid-liquid equilibrium regions in binary systems, one component of which is a dicarboxylic aliphatic acid, are examined by the linear equation in (x
1/x1)=a+bT. Theb term is plottedvs. the difference of polar character and one graph is obtained for the different systems.We thank the CNR (Rome) for financial aid. 相似文献
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G. Berchiesi G. Gioia Lobbia M. A. Berchiesi G. Vitali 《Journal of Thermal Analysis and Calorimetry》1984,29(4):729-732
This paper presents a final discussion on studies of solutions of electrolytes in molten acetamide. These studies deal with cryoscopic and ultrasonic (by shear waves) techniques and reveal the complexity of the behaviour of these systems due to strong ion-solvent interactions.
Thanks are due to CNR and MPI (Rome) for financial support, and to R. Borgarucci for technical assistance. 相似文献
Zusammenfassung Die über Lösungen von Elektrolyten in geschmolzenem Acetamid ausgeführten Untersuchungen werden diskutiert. Diese Untersuchungen erstrecken sich auf kryoskopische und Ultraschall-Methoden und vermitteln ein Bild von der durch starke Ionen-Lösungsmittel-Wechselwirkungen bedingten Komplexität des Verhaltens dieser Systeme.
. , - - .
Thanks are due to CNR and MPI (Rome) for financial support, and to R. Borgarucci for technical assistance. 相似文献
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Maura Pellei Carlo Santini Giancarlo Gioia Lobbia Franco Cantalamessa Cinzia Nasuti Mariacristina Di Prinzio Rosita Gabbianelli Giancarlo Falcioni 《应用有机金属化学》2005,19(5):583-589
New organotin(IV) derivatives containing the anionic ligands bis(3,5‐dimethylpyrazol‐1‐yl)dithioacetate [LCS2]− and bis(3,5‐dimethylpyrazol‐1‐yl)acetate [LCO2]− have been synthesized from reaction between (CH3)2SnCl2 and lithium salts of the ligands. Mononuclear complexes of the type {[LCX2](CH3)2SnCl} (X = S or O) have been obtained and fully characterized by elemental analyses and FT‐IR in the solid state and by NMR (1H, 13C and 119Sn) spectroscopy, conductivity measurements and electrospray ionization mass spectrometry in solution. The acute toxicity of new organotin(IV) derivatives on rat was studied, comparing their effect with those of dimethyltin chloride (CH3)2SnCl2. The comparison of LD50 of organotin(IV) complexes and (CH3)2SnCl2 administered intraperitoneally, as a single dose, evaluated in vivo on rats, showed that toxicity decreases as follows: (CH3)2SnCl2 > LCO2 > LCS2. The effect of these organotin(IV) complexes on DNA was evaluated in vitro and in vivo on rats treated with different doses of these compounds (1/20 LD50 and 1/100 LD50). The lymphocyte DNA status was assessed by the comet assay, a rapid and sensitive single‐cell electrophoresis technique, used to detect primary DNA damage in individual cells. After 36 h from the start of treatment the two new organotin(IV) derivatives induced a significant rise in comet assay parameters, indicating an increasing presence of damaged DNA. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
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Dias HV Flores JA Pellei M Morresi B Lobbia GG Singh S Kobayashi Y Yousufuddin M Santini C 《Dalton transactions (Cambridge, England : 2003)》2011,40(34):8569-8580
Synthesis of the perfluorinated 1,3,5-triazapentadiene [N{(CF(3))C(C(6)F(5))N}(2)]H and the use of its conjugate base as a supporting ligand for the isolation of silver(i) and copper(i) complexes are reported. Some of the related chemistry involving [N{(C(3)F(7))C(C(6)F(5))N}(2)](-) (that has bulkier -C(3)F(7) groups on the 1,3,5-triazapentadienyl ligand backbone) is also presented. X-ray crystallographic data show a wide variety of structures ranging from intermolecular, hydrogen-bonded chain structure for [N{(CF(3))C(C(6)F(5))N}(2)]H with a twisted W-shaped N(3)C(2) core, monomeric [N{(CF(3))C(C(6)F(5))N}(2)]Ag(CN(t)Bu)(2) and [N{(C(3)F(7))C(C(6)F(5))N}(2)]Ag(CN(t)Bu)(2) where the κ(1)-bonded triazapentadienyl ligand bonding to the metal fragment via the central nitrogen atom, monomeric [N{(CF(3))C(C(6)F(5))N}(2)]Ag(PPh(3))(2) and [N{(C(3)F(7))C(C(6)F(5))N}(2)]Ag(PPh(3))(2) that feature κ(1)-bonded triazapentadienyl ligand bonding to the metal fragment via one of the terminal nitrogen atoms, to that of the monomeric [N{(CF(3))C(C(6)F(5))N}(2)]Cu(CN(t)Bu)(2) containing a κ(2)-bonded triazapentadienyl ligand and a U-shaped NCNCN ligand backbone. The isocyanide adducts show relatively high ν(CN) values in the IR spectra. 相似文献
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The liquid-solid equilibrium temperatures in the n-tetracosane + methyl octadecanoate, methyl nonadecanoate or ethyl octadecanoate binary systems are determined in order to obtain the interchange parameters between CH3 or CH2 and COO groups, by means of the statistics of group interaction. 相似文献
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In this study,the three dimensional nanoscale organization in the photoactive layers of poly(3-hexylthiophene) (P3HT) and a methanofullerene derivative (PCBM) is revealed by transmission electron tomography.After annealing treatment,either at elevated temperature or during slow solvent evaporation,nanoscale interpenetrating networks are formed with high crystalline order and favorable concentration gradients of both components through the thickness of the photoactive layer.Such a tailored morphology acco... 相似文献
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G. Gioia Lobbia G. Berchiesi M. A. Berchiesi 《Journal of Thermal Analysis and Calorimetry》1976,10(2):205-209
The liquid — liquid and liquid — solid equilibrium temperatures are taken for the binary systems octadecanol + A (A=dicarboxylic acids, biphenyl or (K, Na) stearate). The results are discussed and a relation connecting the composition of the eutectics with the thermodynamic properties of fusion of the components is derived from the ideal equation and compared with the experimental one.
Zusammenfassung Die Flüssig-Flüssig- und Flüssig-Fest-Gleichgewichtstemperaturen der binÄren Systeme Octadecanol + A (A=DicarboxylsÄuren, Diphenyl oder (K, Na/ Stearat) wurden ermittelt. Die Ergebnisse werden diskutiert und ein Zusammenhang zwischen der Zusammensetzung der Eutektika und den Thermodynamischen Eigenschaften der Schmelze der Komponenten wird aus dem Vergleich der idealen und der auf dem Versuchswege erhaltenen Gleichungen abgeleitet.
Résumé On a mesuré les températures des équilibres liquide-liquide et liquide-solide des systèmes binaires octadécanol + A (A=acides dicarboxyliques, diphényle ou stéarate de potassium, sodium). On discute les résultats et l'on établit une relation entre la composition des eutectiques et les propriétés thermodynamiques de fusion des constituants, dérivée de l'équation initiale et comparée avec la relation expérimentale.
- - + A (A = , (K, Na) ). , .相似文献
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