Zobrazeno 1 - 10
of 21
pro vyhledávání: '"VLADIMIR M. PETRUSEVSKI"'
Publikováno v:
Macedonian Journal of Chemistry and Chemical Engineering, Vol 42, Iss 1 (2023)
Photographic slides of an aperiodic heptagonal tiling were used as two-dimensional diffraction gratings (as a standard approach) to describe and demonstrate the basic properties of dodecagonal quasicrystals. The paper completes our earlier two public
Externí odkaz:
https://doaj.org/article/06c9b012c39f48d5852666e74487e7d4
Autor:
Kende Attila Béres, Zoltán Homonnay, Laura Bereczki, Zsolt Dürvanger, Vladimir M. Petruševski, Attila Farkas, László Kótai
Publikováno v:
Crystals, Vol 13, Iss 7, p 1019 (2023)
Three octahedral iron(III) nitrate complexes with dimethylated urea ligand isomers, [hexakis(N,N’-dimethylurea-O)iron(III)] nitrate (compound 1), trans-[diaquatetrakis(N,N-dimethylurea-O)iron(III)] nitrate (compound 2), and [hexakis(N,N-dimethylure
Externí odkaz:
https://doaj.org/article/ec1eec8d09794eebbd54fbedcce6c5e0
Autor:
Kende Attila Béres, Fanni Szilágyi, Zoltán Homonnay, Zsolt Dürvanger, Laura Bereczki, László Trif, Vladimir M. Petruševski, Attila Farkas, Niloofar Bayat, László Kótai
Publikováno v:
Inorganics, Vol 11, Iss 2, p 68 (2023)
[κ2-O,O′-Carbonatotetraamminecobalt(III)] iodide, or [Co(NH3)4CO3]I, named in this paper as compound 1, was prepared and characterized comprehensively with spectroscopic (IR, Raman and UV) and single-crystal X-ray diffraction methods. Compound 1 w
Externí odkaz:
https://doaj.org/article/700906ce5c284c2d9180fbb44ed7d189
Publikováno v:
Catalysts, Vol 13, Iss 1, p 129 (2023)
Copper manganese oxide spinels and related (multiphase) materials with the formula CuxMn3−xO4 are the active catalysts in a wide variety of industrially important processes due to their great diversity in their phase relations, metal ion valence/si
Externí odkaz:
https://doaj.org/article/61c45b093b4449d8b282fc163bb8b792
Autor:
Laura Bereczki, Vladimir M. Petruševski, Fernanda Paiva Franguelli, Kende Attila Béres, Attila Farkas, Berta Barta Holló, Zsuzsanna Czégény, Imre Miklós Szilágyi, László Kótai
Publikováno v:
Inorganics, Vol 10, Iss 12, p 252 (2022)
We synthesized and characterized (IR, Raman, UV, SXRD) hexaamminecobalt(III) dichloride permanganate, [Co(NH3)6]Cl2(MnO4) (compound 1) as the precursor of Co–Mn–spinel composites with atomic ratios of Co:Mn = 1:1 and 1:3. The 3D−hydrogen bond n
Externí odkaz:
https://doaj.org/article/b62864ed11ec42f389c6a8a40473eb8d
Autor:
Nóra V. May, Niloofar Bayat, Kende Attila Béres, Petra Bombicz, Vladimir M. Petruševski, György Lendvay, Attila Farkas, László Kótai
Publikováno v:
Inorganics, Vol 10, Iss 9, p 123 (2022)
A hemipyridine solvate of bis(pyridine)silver(I) perchlorate, [Agpy2ClO4]·0.5py (compound 1) was prepared and characterized by single crystal X-ray analysis and vibrational spectroscopy (R and low-temperature Raman). Compound 1 was prepared via the
Externí odkaz:
https://doaj.org/article/28fcca97784c4a188e11e334c98be3f4
Autor:
Kende Attila Béres, István E. Sajó, György Lendvay, László Trif, Vladimir M. Petruševski, Berta Barta-Holló, László Korecz, Fernanda Paiva Franguelli, Krisztina László, Imre Miklós Szilágyi, László Kótai
Publikováno v:
Molecules, Vol 26, Iss 13, p 4022 (2021)
An aerial humidity-induced solid-phase hydrolytic transformation of the [Zn(NH3)4]MoO4@2H2O (compound 1@2H2O) with the formation of [(NH4)xH(1−x)Zn(OH)(MoO4)]n (x = 0.92–0.94) coordination polymer (formally NH4Zn(OH)MoO4, compound 2) is described
Externí odkaz:
https://doaj.org/article/c95262ee0e874f49b1fb2f9958b315e2
Publikováno v:
Macedonian Journal of Chemistry and Chemical Engineering, Vol 36, Iss 2, Pp 279-284 (2017)
A study was conducted to test the level of conceptual understanding of certain chemistry concepts defined in the national curriculum in Macedonia among 8th grade students who participated in the National chemistry competition in the 2016/17 school ye
Externí odkaz:
https://doaj.org/article/7c7c166265444851af051e01819ed81e
Autor:
Lara Alexandre Fogaça, Laura Bereczki, Vladimir M. Petruševski, Berta Barta-Holló, Fernanda Paiva Franguelli, Miklós Mohai, Kende Attila Béres, Istvan E Sajó, Imre Miklós Szilágyi, Laszlo Kotai
Publikováno v:
Inorganics, Vol 9, Iss 5, p 38 (2021)
The reaction of ammoniacal AgNO3 solution (or aq. solution of [Ag(NH3)2]NO3) with aq. NaClO4 resulted in [Ag(NH3)2]ClO4 (compound 1). Detailed spectroscopic (correlation analysis, IR, Raman, and UV) analyses were performed on [Ag(NH3)2]ClO4. The temp
Externí odkaz:
https://doaj.org/article/ddf14d30e80847a7950465f455fc9568
Autor:
Vladimir M. Petruševski
Publikováno v:
Macedonian Journal of Chemistry and Chemical Engineering, Vol 34, Iss 1, Pp 73-85 (2015)
A survey is given for the crystallographic and vibrational spectroscopic results of a number of alums. From both types of results (structural and spectroscopic) it is positively known that the sulfate α-alums exhibit orientational disorder of the su
Externí odkaz:
https://doaj.org/article/d1adb955cc8b48ab80ca3128a6fcecd1