ISSN 0352-5139
J. Serb. Chem. Soc. Vol. 69, No. 3 (2004)
CONTENTS
Organic Chemistry
P. Zhong and X. Huang: Stereoselective synthesis of (E)-vinyl alkyl sulfides via hydrozirconation of terminal alkynes
175
Inorganic Chemistry
N. Raji}, Dj. Stojakovi}, D. Han`el and V. Kau~i~: The structure directing role of 1,3-diaminopropane in the hydrothermal synthesis of iron(III) phosphate
179
S. B. Tanaskovi} and G. Vu~kovi}: The preparation and characterization of Cu(II) complexes with N,N’,N",N’’’-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane and 2,6-diacetylpyridine bis (semi/thiosemicarbazone)
187
W. Ferenc, B. Bocian and A. Walkow-Dziewulska: Spectroscopic, magnetic and thermal behaviour of the 2,3,4-trimethoxybenzoates of heavy lanthanides(III) and yttrium(III)
195
Physical Chemistry
P. I. Premovi}, N. D. Nikoli}, M. S. Pavlovi} and K. I. Panov: Geochemistry of the Cretaceous-Tertiary transition boundary at Blake Nose (N. W. Atlantic): Cosmogenic Ni
205
G. Popovi} and M. ^akar: The effect of b-cyclodextrin and pH on bifonazole hydrosolubility
225
J. D. Jovanovi} and D. K. Grozdani}: Saturated-liquid heat capacity of organic compounds: New empirical correlation model (Note)
233
Materials
M. S. Lazi}, K. Simovi}, V. B. Mi{kovi}-Stankovi}, P. Jovani} and D. Ki}evi}: The influence of the deposition parameters on the porosity of thin alumina films on steel
239
J. Serb. Chem. Soc. 69(3)175–178(2004)
UDC 678.745+542.913
JSCS – 3142
Original scientific paper
Stereoselective synthesis of (E)-vinyl alkyl sulfides
via hydrozirconation of terminal alkynes
PING ZHONG1,2 and XIAN HUANG2
1Department of Chemistry, Wenzhou Normal College, Wenzhou 325027, P. R. China and 2Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China (e-mail: )
(Received 15 July, revised 3 November 2003)
Abstract: Terminal alkynes react with Cp2Zr(H)Cl (Cp = h5-C5H5) to give organozirconium complexes, which are trapped with alkylsulfenyl chlorides to afford (E)-vinyl alkyl sulfides in good yield.
Keywords: alkyne, sulfide, alkylsulfenyl chloride, hydrozirconation, synthesis.
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J.Serb.Chem.Soc. 69(3)179–185(2004)
UDC 546.723–31+546.182.6:542.913
JSCS – 3143
Original scientific paper
The structure directing role of 1,3-diaminopropane in the
hydrothermal synthesis of iron(III) phosphate
NEVENKA RAJI]1, DJORDJE STOJAKOVI]1, DARKO HAN@EL2 and VEN^ESLAV KAU^I^3,4
1Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia and Montenegro (e-mail address: ), 2Institute Jo`ef [tefan, 1000 Ljubljana, Slovenia, 3National Institute of Chemistry, 1000 Ljubljana, Slovenia and 4University of Ljubljana, 1000 Ljubljana, Slovenia
(Received 6 October 2003)
Abstract: 1,3-Diaminopropane (DAP) was used as a structure-directing agent for the hydrothermal synthesis of an organically templated iron phosphate. During crystallization at 180 ºC, iron phosphate (FePO-DAP) with a layered structure was formed after one day. Longer crystallization yielded a mixture of FePO-DAP and leucophosphite, raising the question whether a transformation of FePO-DAP to leucophosphite occurs, or wheter DAP decomposes under hydrothermal conditions resulting in leucophosphite formation. Lattice energy and free energy calculations strongly support the supposition that a decomposition of DAP occurs prior to the formation of leucophosphite.
Keywords: FePO, iron phosphate, hydrothermal synthesis, GULP, open-framework.
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J.Serb.Chem.Soc. 69(3)187–193(2004)
UDC 546.562+546.17:615.281
JSCS – 3144
Original scientific paper
The preparation and characterization of Cu(II) complexes with N,N’,N”,N’”-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane and 2,6-diacetylpyridine bis(semi/thiosemicarbazones)
SLADJANA B. TANASKOVI]a and GORDANA VU^KOVI]b
aFaculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade and bFaculty of Chemistry, University of Belgrade, P. O. Box 158, 11001 Belgrade, Serbia and Montenegro
(e-mail: )
(Received 24 April, revised 13 October 2003)
Abstract: Two new Cu(II) mixed-ligand complexes with octadentate N,N’,N”,N’”-tetrakis(2-pyridylmethyl))-1,4,8,11-tetraazacyclotetradecane (tpmc) and potentially pentadentate ligands 2,6-diacetylpyridine bis(semicarbazone) (DAPsc2) or 2,6-diacetylpyridine bis(thiosemicarbazone) (DAPtsc2) were prepared. The general formulas: [Cu4 DAPsc2(tpmc)2]ClO4)8 . 5CH3COCH3 . H2O and [Cu2 DAPtsc2(tpmc)](ClO4)4 . 7 C2H5OH were proposed on the basis of elemental analyses and conductometric measurements. The complexes were characterized by magnetic measurement, electronic absorption and IR spectroscopy. For the dinuclear complex, an exo coordination of Cu(II) with four nitrogens from tpmc and m-bonded DAPtsc2 through sulfurs and possibly terminal hydrazinic (azomethine) nitrogens is assumed. For the tetranuclear complex, it is supposed that one DAPsc2 bridges two [Cu2 tpmc]4+ units using oxygens and terminal hydrazinic nitrogens as ligators. Finally, some antibacterial activity of the complexes was found.
Keywords: Cu(II) complexes, N,N’,N”,N’”-tetrakis(2-pyridylmethyl))-1,4,8,11-tetraazacyclotetradecane (tpmc), 2,6-diacetylpyridine bis(semicarbazone), 2,6-diacetylpyridine bis(thiosemicarbazone), antibacterial activity.
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J.Serb.Chem.Soc. 69(3)195–204(2004)
UDC 546.650+546.668+547.5:54–74
JSCS – 3145
Original scientific paper
Spectroscopic, magnetic and thermal behaviour of the 2,3,4-trimethoxybenzoates of heavy lanthanides(III) and
yttrium(III)
WIESºAWA FERENC, BEATA BOCIAN and AGNIESZKA WALKÓW-DZIEWULSKA
Department of General Chemistry, Faculty of Chemistry, Maria Curie-Sk»odowska University, Pl 20-031, Lublin, Poland (e-mail: )
(Received 28 July, revised 10 October 2003)
Abstract: The complexes of 2,3,4-trimethoxybenzoic acid with Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III), Lu(III) and Y(III) are crystalline, anhydrous salts with colours typical of the M(III) ions. The carboxylate group is probably a bidenate, chelating ligand. The thermal stabilities of the complexes were examined under an air atmosphere in the temperature range 293–1273 K. The solubility in water at 293 K for all the heavy lanthanide(III) and yttrium(III) complexes are in the order of 10-3 mol dm-3. The magnetic moments of the complexes were determined in the temperature range 77–300 K.
Keywords: heavy lanthanides(III), yttrium(III), thermal stability, IR spectra, complexes of 2,3,4-trimethoxybenzoic acid, magnetic moments.
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J.Serb.Chem.Soc. 69(3)205–223(2004)
UDC 523.44+550.4:549.263
JSCS – 3146
Original scientific paper
Geochemistry of the Cretaceous-Tertiary transition boundary at Blake Nose (N.W. Atlantic): Cosmogenic Ni
PAVLE I. PREMOVI]1,, NIKOLA D. NIKOLI]1, MIRJANA S. PAVLOVI]2 and KATJA I. PANOV1
1Laboratory for Geochemistry, Cosmochemistry & Astrochemistry, University of Ni{, P. O. Box 91, 18000 Ni{ and 2Vin~a Institute of Nuclear Sciences, P. O. Box 522, 11001 Belgrade, Serbia and Montenegro (e-mail: )
(Received 17 October 2003)
Abstract: The Cretaceous-Tertiary (KT) boundary transition at the Blake Nose Plateau recovered by ODP Leg 171B (site 1049, hole A, core 17X, section 2) contains an ejecta bed (thickness ca. 17 cm) marking a late Cretaceous asteroid impact. The nature and geochemical composition of this bed imply that it originated mainly from the target rocks of the Chicxulub impact site (Yucatan Peninsula, Mexico), the site of the presumed asteroid impact. The ejecta bed of hole 1049A contains relatively high concentrations of Ni (up to 165 ppm) within the carbonate fraction. It is reasoned that this enhancement represents a sudden and rapid airfall of high cosmogenic Ni into he Blake Nose Basin. The source of the metal was the Chicxulub impacting (carbonaceous) chondrite. It is suggested that many calcareous planktons in the KT ocean surface water of the Blake Nose Plateau were probably vulnerable to the high influx of superacid rainfall and associated toxic metals (e.g., Ni) created by the impact.