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1
100%
Polish Journal of Chemistry
EN Complexes of Co(II), Ni(II) and Cu(II) with 1-(2'-hydroxy-3'- iodo-5'- methylphenyl)- 3-(3,4-methylenedioxyphenyl)-2-propen-1-one (L1), 1-(2'- hydroxy-3'-bromo-5'- chlorophenyl)- 3-(3,4- methylenedioxyphenyl)-2-propen-1-one (L2) and 1-(2'- hydroxy-3'-iodo- 4'-methyl-5'-chlorophenyl)-3- (3,4-methylen[...]
2
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Polish Journal of Chemistry
2009 Vol. 83, nr 9 1555-1563
EN A series of new chromium(III), manganese(II), iron(III), cobalt(II), nickel(II) and copper(II) complexes of the Schiff base hydrazone (HDHAHQO), synthesized from 3-hydrazinoquin oxaline-2-one (HQO) and dehydroacetic acid (DHA) were prepared and characterized. The Schiff base exhibits biambidenticity[...]
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Polish Journal of Chemistry
EN Spectroscopy with linearly polarized light on aligned samples (LD spectroscopy) is a useful technique that may greatly enhance the possibilities for determining sample structure, making spectral assignments, and several other tasks, generally based on a determination of transition moment directions.[...]
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Prace Naukowe Instytutu Górnictwa Politechniki Wrocławskiej. Konferencje
PL W artykule przedstawione zostały nowe kierunki badań nad zjawiskiem zgorzeli słonecznej skał bazaltowych podjęte w Zakładzie Górnictwa Skalnego Instytutu Mechanizacji Budownictwa i Górnictwa Skalnego w Warszawie. Podstawowym celem prac było opracowanie wstępnych założeń metodyki badawczej pozwalając[...]
EN "Sunburn" examination was begun in Institute of Rock Mining in Institute of Mechanised Construction and Rock Mining last year. Main target was Iooking for initial ideas for new undoubtful method of testing basaltic rocks. We try to find the way to intensive and identifi "sunburn" in basaltic rocks. [...]
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Polish Journal of Chemistry
2001 Vol. 75, nr 12 1853-1861
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Polish Journal of Chemistry
2007 Vol. 81, nr 10 1753-1753
EN Schiff bases 2–6 obtained from 2-aminobenzimidazole 1 with p-(N,N-diethylamino)-, p-chloro-, p-bromo-, 2,4-dimethoxy-, and 3,4-dimethoxybenzaldehyde were subjected to the reaction with 1,3-ketoester: methyl-, ethyl-, benzyl-, and t-butylacetoacetate to form derivatives of pyrimido[1,2-a]benzimidazol[...]
7
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Polish Journal of Chemistry
EN The transformation of the 3-oxoazabicyclo[2.2.2]octane pentachlorophenol complex in methanol (and CH3OD) solution into the 3-hydroxy-3-methoxy-azabicyclo[2.2.2]octane pentachlorophenolate is described. The presence of the acidic phenol proton were sufficient to promote such a reaction. The crystal s[...]
8
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Polish Journal of Chemistry
EN Complexes of ZnX2 (X=Cl, Br, I, SCN) with 5,7-dimethyl-1,2,4-triazolo-[1,5a]-pyrimidine, 5,7-diphenyl-1,2,4-triazolo-[1,5a]-pyrimidine and 5,7-di-tert-butyl-1,2,4-triazolo-[1,5a]-pyrimidine were prepared and characterized by IR (100-4000 cm-1) and 1H, 13C, 15N NMR spectroscopies. Spectral data sugge[...]
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Polish Journal of Chemistry
1999 vol. 73 nr 2 293-297
EN The thermal decomposition of the complexes Mg(Clac)2(pic)2×3H20 (I), Mg(Cl2ac)2(pic) × 4H20 (II) and Mg(Cl3ac)2(pic)2 × 3H2O (III), where Clac = ClCH2COO-, Cl2ac = Cl2CHCOO-, Cl3ac = Cl3CCOO- and pic = g-picoline had been investigated in air by TG and DTA. The possible scheme of destruc[...]
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Metallurgy and Foundry Engineering
2016 Vol. 42, no. 3 171--178
PL W artykule przedstawiono wyniki badań spektralnych (IR, UV-Vis) procesu aktywacji montmorylonitu wapniowego Ca-MMT kationami sodu. Modyfikację Ca-MMT prowadzono z udziałem modyfikatora w postaci węglanu sodu przy zachowaniu różnych czasów aktywacji. Dla otrzymanych modyfikatów so[...]
EN The results of spectral research (IR, UV-Vis) on the activation process of calcium montmorillonite Ca-MMT by sodium cations are presented in this article. The modifications of Ca-MMT were carried out by a modifier in the form of sodium carbonate by keeping different times[...]
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Tribologia
2004 nr 4 293-299
PL W artykule przedstawiono wyniki badań właściwości smarnych próbek oleju bazowego i oleju sprężarkowego w aparacie czterokulowym, po ich naświetlaniu promieniowaniem ultrafioletowym UV-C w różnych sekwencjach czasowych. Stwierdzono, że ilość produktów utleniania olejów, wyznaczana metodą IR, zależy o[...]
EN Four-ball apparatus examination of lubricity of two lubricating oils - base oil and compressor oil - after their exposure to UV-C radiation are presented in the paper. Some results of the measurements in graphs are reported. The quantity of oxidation products in the oils depends on the UV-C radiatio[...]
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Materiały Ceramiczne
2014 T. 66, nr 3 302--309
PL W pracy zbadano wpływ domieszki SiO2 na trwałość termiczną i zakres transmisji szkieł ołowiowo-galowych. Szkła te ze względu na brak typowych składników szkłotwórczych charakteryzują się zwiększoną tendencją do krystalizacji. Pomimo tego są one interesującym materiałem ze względu na przesuniętą do z[...]
EN The paper presents an effect of SiO2 dopant on the thermal stability and the UV-VIS and IR transmission of lead-gallium glass. These glasses, due to the absence of typical glass-forming components, are characterized by an increased tendency to crystallize. Despite this, they are interesting material[...]
13
88%
Archives of Acoustics
EN IR spectroscopy, density and ultrasonic velocity measurements have been carried out for aluminum lithium phosphate glasses with and without MoO3. The observed changes in the FTIR spectra of the glasses were related to the modifier/former role of molybdenum ions. The results revealed that the density[...]
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88%
Polish Journal of Chemistry
2009 Vol. 83, nr 9 1529-1535
EN Co(II), Ni(II), Cu(II) and Zn(II) complexes of Schiff base, derived by the condensation of indole-3-carboxaldehyde and beta-alanine, were synthesized and characterized by elemental analysis, conductance measurements, IR, electronic spectra, magnetic measurements and powder XRD. The analytical data s[...]
15
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Polish Journal of Chemistry
1998 Vol. 72, nr 11 2450-2454
EN ZSM-5 zeolite modified with Tl has been investigated with XRD, IR and XPS spectroscopies. Thallium Tl(+) ions were introducted in the exchange reaction in water medium, accompanied by exchange of Na(+) with H(+). From XPS results follows that more likely thallium atoms have been incorporated to the [...]
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Polish Journal of Chemistry
1998 Vol. 72, nr 9 2087-2092
EN The complexes of light lanthanides (La-Eu) with 2,6-dihydroxybenzoic acid have been prepared and their IR spectra and thermal decomposition have been investigated. The complexes Ln(C7H5O4)3 x nH2O, where n=4 for La-Sm and n=6 for Eu, when heated lose the crystallization water molecules in one (La-Pr[...]
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Polish Journal of Chemistry
EN Lithium vanadium bronzes with composition formula LixV2O5 (0.04 _ x _ 0.92) have been prepared by solid-state reaction at 650graduate C in argon atmosphere. The obtained products were characterized by X-ray powder diffraction and IR spectroscopy. The results reveal that four phases are present in th[...]
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Polish Journal of Chemistry
2006 Vol. 80, nr 10 1601-1614
EN Reaction of the ligands, squaric acid and hydrazine with Ln(NO3)3 where Ln(III) = La, Pr, Nd, Sm, Gd and Ce results in the formation of the complexes of the formula, N2H5[Ln(C4O4)2]xH2O where x = 3, 5 and 6 and their reaction with transition metal nitrates, M(NO3)2xH2O, where M(II) = Co, Ni, Cu, Zn [...]
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Polish Journal of Chemistry
2006 Vol. 80, nr 7 1039-1053
EN 2-Hydroxymethyl-pyridine with chloroacetone gave 3-hydroxy-3-methyl-pyrido[2,1-c] [1,4]dihydrooxazinium chloride (1). Its crystal structure was determined by X-ray diffraction and confirmed by FTIR and NMR spectra. In DMSO and D2O solutions this compound exists in some equilibrium mixture with N-ace[...]
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Polish Journal of Chemistry
EN Thermal stability and redox behavior of the surface Cr-oxo structures supported upon silica were investigated by: TPR, TPO, XRD, IR and XPS techniques. During reduction in hydrogen, the surface Cr(VI) oxide phase is completely transformed into the Cr(III) oxidation state. For low loaded Cr/SiO2 samp[...]
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