YU-ISSN 0352-5139
J.Serb.Chem.Soc. Vol. 68, No. 6 (2003)
CONTENTS
Organic Chemistry
A. S. Veli~kovi}, M. S. Risti}, D. T. Veli~kovi}, S. N. Ili} and N. D. Miti}: The possibilities of the application of some species of sage (Salvia L.) as auxiliaries in the treatment of some diseases
435
M. Carposu, L. Odochian, St. Dima. M. Dumitras and M. Petrovanu: Thermokinetic study of the inactivation reaction of 1-methyl phthalazinium ylids
447
Inorganic Chemistry
R. N. Prasad and N. Gupta: Termplate synthesis of Mn(II) complexes of tetraaazamacrocycles derived from diaminoalkanes and 3,4-hexanedione or benzil
455
M. G. Abd El Wahed: Thermodynamic and structural studies of complexes of manganese(II), cobalt(II), nickel(II) and copper(II) with aminofuropyridine carboxamide (Note)
463
D. Vu~ini}, I. Miljanovi}, A. Rosi} and P. Lati}: Effect of Na2O/SiO2 mole ratio on the crystal type of zeolite synthesized from coal fly ash
471
Physical Chemistry
J. D. Jovanovi} and D. K. Grozdani}: Saturated-liquid heat capacity: new polynomial models and review of the literature experimental data (Note)
479
Electrochemistry
V. Vojinovi}, S. Mentus and V. Komneni}: Thermodynamic and kinetic behavior of hydrogen electrode in a solution of 0.5 M KClO4 in dimethyl sulphoxide
497
Materials
B. Matovi}, S. Bo{kovi} and M. Logar: Preparation of basalt-based glass ceramics
505
K. I. Popov, S. B. Krsti} and M. G. Pavlovi}: The critical apparent density for the free flow of copper powder (Preliminary communication)
511
J.Serb.Chem.Soc. 68(6)435–445(2003)
UDC 635.74.004.14:615.85
JSCS – 3059
Original scientific paper
The possibilities of the application of some species of sage (Salvia L.) as auxiliaries in the treatment of some diseases
ANA S. VELI^KOVI]1, MIHAILO S. RISTI]2, DRAGAN T. VELI^KOVI]3, STEVAN N. ILI]4 AND NATA[A D. MITI]3
1Medical Center “Mo{a Pijade”, Department of General Practice, Rade Kon~ara St. 2, 16000 Leskovac, 2Institute for Medicinal Plants Research “Dr. Josif Pan~i}”, Tadeu{a Ko{}u{ka St. 1, 11000 Belgrade, 3AD “Zdravlje” Pharmaceutical and Chemical Industry, Vlajkova St. 199, 16000 Leskovac and 4Faculty of Medicine, Bra}e Taskovi} St. 81, 18000 Ni{, Serbia and Montenegro
(Received 5 November 2002)
Abstract: The chemical composition of four essential oils of four species of sage (Salvia officinalis L., Salvia pratensis L., Salvia glutinosa L. and Salvia aethiopis L.) are examined by GC-FID and GC-MS analysis. The presence of some components in the essential oil (mono- and sesquiterpene) determines the pharmacological effects and therapeutical application of a plant species. Salvia officinalis L. gives the highest yield of oil (1.1 %), while the lowest is in Salvia pratensis L. (0.1 %). The investigations included the determination of the antimicrobic activities of the essential oils by the diffusion method and the oil of Salvia pratensis L. proved to have the highest activity.
Keywords: diseases, therapy, auxiliaries, Salvia L., antimicrobial activity, essential oils, extracts.
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J.Serb.Chem. Soc. 68(6)447–453(2003)
UDC 66.021.4:547.852.7
JSCS – 3060
Original scientific paper
Thermokinetic study on the inactivation reactions of
1-methylphthalazinium ylids
MARIA CAPROÔU*, LUCIA ODOCHIAN*, ÔT. DIMA**, M. DUMITRAÔ* and MAGDA PETROVANU*
*The “Al. I. Cuza” University, Faculty of Chemistry, Bd. Copou 11, Iasi 6600, Romania and
**The “Dunarea de jos” University, Galati, Romania
(Received 11 October 2002, revised 9 January 2003)
Abstract: The present paper consists in a thermokinetic study on the dimerization reactions of 1-methylphthalazinium ylids with –NO2 (ylid 1) and, respectively, –O–CH3 (ylid 2) substituents in the p position of the benzoyl radical bound to the ylidic carbanion. From experimental data, the reaction order and rate constants have been calculated. The reaction order n = 2 confirmed the ylids’ dimerization reactions, while the values of the rate constants, k2 = 3.093 ´10-2 L/mol s and, respectively, 2.16 ´ 10-1 L/mol s for the dimerization of ylids 1 and 2 made evident the higher reactivity of ylid 2 versus ylid 1. The same conclusion is also supported by the results of the thermodynamic study based on the chemical affinity of the two reactions, when Aodim,1 < Aodim,2.
Keywords: 1-methylphthalazinium ylids, dimerization, inactivation, thermokinetics (reaction order, rate constants, chemical affinity).
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2. St. Dima, I. Mangalagiu, M. CaproÕu, M. Petrovanu, Ann. Sci. Univ. IaÕi (sl. c.) 4 (1996) 151
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J.Serb.Chem.Soc. 68(6)455–461(2003)
UDC 547.21+547.639.1:542.913:543.4
JSCS – 3061
Original scientific paper
Template synthesis of Mn(II) complexes of tetraazamacrocycles derived from diaminoalkanes and 3,4-hexanedione or benzil
RAGHU N. PRASAD and NITIN GUPTA
Department of Chemistry, University of Rajasthan, Jaipur-302 004, India
(e-mail: )
(Received 31 October 2002, revised 8 January 2003)
Abstract: Template condensation of a-diketones, such as 3,4-hexanedione or benzil, with 1,n-diaminoalkanes (where n = 4, 5, 6, 7, 8, 9, 10 or 12) in the presence of Mn(II) resulted in the formation of complexes of the type [MnL(NO3)]NO3 (where L = 16 to 32-membered macrocycle). These complexes have been characterized by elemental analyses, conductances, magnetic measurements, as well as IR and electronic spectra.
Keywords: macrocyclic complexes, manganese complexes, IR spectra, electronic spectra.
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J.Serb.Chem.Soc. 68(6)463–470(2003)
UDC 547.821+547.831:536.7.004.12
JSCS – 3062
Note
N O T E
Thermodynamic and structural studies of complexes of
manganese(II), cobalt(II), nickel(II) and copper(II) with aminofuropyridine carboxamide
M. G. ABD EL WAHED
Faculty of Science, Zagazig University, Zagazig, Egypt
(Received 11 September 2002, revised 27 January 2003)
Abstract: Complexes of Mn(II), Co(II), Ni(II) and Cu(II) with 2-aminofuro[3,2-b]pyridine-3-carboxamide have been prepared. The stability constants of the formed complexes were determined at 20, 30, 40 and 50 ºC at a fixed ionic strength, I = 0.1 mol dm-3 (KCl). The values of the thermodynamic functions associated with complex formation were calculated and analyzed in terms of electrostatic and non-electrostatic components. The complexes were characterized with the help of chemical and spectral data.
Keywords: aminofuropyridine carboxamide, thermodynamic, conductometric, photometric, spectral properties.
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J.Serb.Chem.Soc. 68(6)471–478(2003)
UDC 549.67+666.122.2/.362–492.2:542.913
JSCS – 3063
Original scientific paper
Effect of Na2O/SiO2 mole ratio on the crystal type of zeolite synthesized from coal fly ash
DU[ICA VU^INI]1,, IGOR MILJANOVI]1, ALEKSANDRA ROSI]1 and PREDRAG LAZI]1
1Faculty of Mining and Geology, Dju{ina 7, 11000 Belgrade, Serbia and Montenegro
(Received 11 September, revised 5 December 2002)
Abstract: Coal fly ash was modified to zeolitic materials by hydrothermal treatment at 90 ºC. The zeolite synthesis was studied as a function of the mole ratio of Na2O/SiO2 in the reaction mixtures. The results showed that NaP1 zeolite is obtained when the Na2O/SiO2 mole ratio was 0.7. Hydroxysodalite is the dominant zeolite phase in modified fly ash treated with a higher Na2O concentration solution (Na2O/SiO2 = 1.3). The IR and XRD methods were used to determine the phases present in the starting sample and in the zeolitic materials.
Keywords: coal fly ash, hydrothermal treatment, zeolitic materials.
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J.Serb.Chem.Soc. 68(6)479–495(2003)
UDC 66.011+536.412:517.538
JSCS – 3064
N o t e
N O T E
Saturated-liquid heat capacity: new polynomial models and review of the literature experimental data
JOVAN D. JOVANOVI] and DU[AN K. GROZDANI]
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia and Montenegro
(Received 18 December 2002)
Abstract: In this paper a review of selected literature experimental data for saturated-liquid heat capacities was presented. Two-, three- and four-parameter polynomial correlation models are tested on those data. Obtained results lead to the conclusion that correlation quality depends on the number of parameters, and slightly on the type of models. The best two-, three- and four-parameter models were proposed.
Keywords: heat capacity, saturated-liquid heat capacity, correlation, polynomial model.
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