@article{MTMT:34204776, title = {Crystalline Forms of 4,4'-Methylenediantipyrine: Crystallographic Unit Cell for the Anhydrous Form, from Laboratory Powder XRD Pattern by DASH Program Package}, url = {https://m2.mtmt.hu/api/publication/34204776}, author = {Bánhegyi, Dorottya Fruzsina and Madarász, János and Fogassy, Elemér and Pálovics, Emese Csilla and Pokol, György}, doi = {10.3311/PPch.22950}, journal-iso = {PERIOD POLYTECH CHEM ENG}, journal = {PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING}, volume = {67}, unique-id = {34204776}, issn = {0324-5853}, abstract = {Crystalline unit cell structure of anhydrous title compound, diantipyrinylmethane (CAS Registry No. 1251-85-0), a substance usually obtained as a by-product in Mannich type reactions of antipyrine, has been modelled by the help of powder X-ray diffraction, applying the DASH software package and crystal coordinates coming from former single crystal X-ray structure determinations (CSD codes FADDIY and FADDIY01) of its monohydrate. The unit cell of the anhydrate compound belongs to the monoclinic space group P21/a, with unit cell parameters of a = 14.604, b = 9.858, c = 14.509 Å, β = 95.56 °, V = 2078.9 Å3, Z = 4, Z ' = 1. Comparisons of FT-IR spectrum and thermal behavior of the anhydrous and monohydrated forms confirm differences in degree of hydration and solid state structure, while those of 1H- and 13C NMR-spectra show their molecular identity.}, year = {2023}, eissn = {1587-3765}, pages = {557-564}, orcid-numbers = {Bánhegyi, Dorottya Fruzsina/0000-0003-2438-8567; Pokol, György/0000-0003-1597-9808} } @article{MTMT:34107401, title = {Fe spin states and redox processes in Schiff base type complexes}, url = {https://m2.mtmt.hu/api/publication/34107401}, author = {Várhelyi, Csaba, ifj. and Szőke, Á. and Sziráki, Laura and Tomoaia-Cotișel, M. and Homonnay, Zoltán and Szalay, Roland and Simon-Várhelyi, M. and Mereu, R.-A. and Pokol, György and Szilágyi, Imre Miklós and Papp, J. and Mihály, Judith and Kuzmann, Ernő}, doi = {10.1007/s10967-023-09095-w}, journal-iso = {J RADIOANAL NUCL CHEM}, journal = {JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY}, volume = {332}, unique-id = {34107401}, issn = {0236-5731}, year = {2023}, eissn = {1588-2780}, pages = {4125-4139}, orcid-numbers = {Homonnay, Zoltán/0000-0001-5299-5394; Szalay, Roland/0000-0003-3535-5365; Pokol, György/0000-0003-1597-9808; Kuzmann, Ernő/0000-0002-0183-6649} } @article{MTMT:33543852, title = {Economic Separations of Organic Acidic or Basic Enantiomeric Mixtures—A Protocol Suggestion}, url = {https://m2.mtmt.hu/api/publication/33543852}, author = {Pálovics, Emese Csilla and Madarász, János and Pokol, György and Fogassy, Elemér and Bánhegyi, Dorottya Fruzsina}, doi = {10.3390/ijms24010846}, journal-iso = {INT J MOL SCI}, journal = {INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES}, volume = {24}, unique-id = {33543852}, issn = {1661-6596}, abstract = {In this review, we aim to present new concepts for the revisited separation of enantiomers from racemic compounds and a protocol worth to be followed in designing the preparation of pure enantiomers. We have taken into account not only the influence of the properties (eutectic composition) and characteristics of the reactants (racemic compound, resolving agent), but also the behavior of the resulting diastereomers and the different conditions (e.g., crystallization time, solvents used, solvate-forming compounds, achiral additives, etc.). The examples discussed are resolutions developed by our research team, through which we will try to illustrate the impact of all these considerations, presenting the methodological investigations interpreting recent discoveries and observations. Some special solid-state analytical and structural investigations assisting us in the elucidation and invention design of the resolution processes of some active pharmaceutical ingredients, such as Tetramisole, tofisopam, and Amlodipine, are also shown.}, year = {2023}, eissn = {1422-0067}, orcid-numbers = {Pokol, György/0000-0003-1597-9808; Bánhegyi, Dorottya Fruzsina/0000-0003-2438-8567} } @CONFERENCE{MTMT:33646163, title = {Szemi- és tioszemikarbazonokkal képzett platina- és nikkel-komplexek előállítása, valamint fizikai-kémiai és biológiai vizsgálatuk (Pt- and Ni-complexes Syntheses with Semi- and Thiosemicarbazones, and their Physical-Chemical and Biological Study)}, url = {https://m2.mtmt.hu/api/publication/33646163}, author = {Várhelyi, Csaba, ifj. and Pokol, György and Szalay, Roland and MEREU, RALUCA-ANCA and Simon-Várhelyi, Melinda and Tötös, Róbert and Madarász, János and PAPP, JUDIT and Mihály, Judith}, booktitle = {A Magyar Tudomány Napja Erdélyben 2022: Tudomány: út a világ megismeréséhez}, unique-id = {33646163}, year = {2022}, pages = {28-30}, orcid-numbers = {Pokol, György/0000-0003-1597-9808; Szalay, Roland/0000-0003-3535-5365} } @inproceedings{MTMT:33645223, title = {Novel Copper Complexes with Glyoximes, Amines, Schiff Bases, Semi- and Thiosemicarbazones; Synthesis and Physico-Chemical Analysis}, url = {https://m2.mtmt.hu/api/publication/33645223}, author = {Várhelyi, Csaba, ifj. and Szalay, Roland and Pokol, György and Madarász, János and Szilágyi, Imre Miklós and Huszthy, Péter and Simon-Várhelyi, Melinda and Tötös, Róbert and RALUCA-ANCA, MEREU and ALEXANDRA, AVRAM and Korecz, László and May, Nóra Veronika and Mihály, Judith}, booktitle = {Proceedings of the 28th International Symposium on Analytical and Environmental Problems}, unique-id = {33645223}, year = {2022}, pages = {46-50}, orcid-numbers = {Szalay, Roland/0000-0003-3535-5365; Pokol, György/0000-0003-1597-9808; Huszthy, Péter/0000-0001-7305-3312; May, Nóra Veronika/0000-0003-4770-4681} } @CONFERENCE{MTMT:33645214, title = {Glioximokkal, aminokkal, bórsav-észterekkel és Schiff-bázisokkal képzett új vas(II)-komplexek fizikai-kémiai elemzése, és biológiai tulajdonságainak vizsgálata (Novel Iron(II) Complexes with Glyoximes, Amines, Borate Esters and Schiff-Bases, their Physico-Chemical Analysis and Biological Properties Study)}, url = {https://m2.mtmt.hu/api/publication/33645214}, author = {Várhelyi, Csaba, ifj. and Szalay, Roland and Kuzmann, Ernő and Homonnay, Zoltán and Pokol, György and Madarász, János and PAPP, JUDIT and MEREU, RALUCA-ANCA and Huszthy, Péter and Simon-Várhelyi, Melinda and AVRAM, ALEXANDRA and Mihály, Judith}, booktitle = {XXVIII. Nemzetközi Vegyészkonferencia = 28th International Conference on Chemistry}, unique-id = {33645214}, year = {2022}, pages = {44-44}, orcid-numbers = {Szalay, Roland/0000-0003-3535-5365; Kuzmann, Ernő/0000-0002-0183-6649; Homonnay, Zoltán/0000-0001-5299-5394; Pokol, György/0000-0003-1597-9808; Huszthy, Péter/0000-0001-7305-3312} } @article{MTMT:33645156, title = {Synthesis of Pt(II)-complexes with symmetrical and unsymmetrical glyoximes, their physical-chemical and biological study}, url = {https://m2.mtmt.hu/api/publication/33645156}, author = {Várhelyi, Csaba, ifj. and Szalay, Roland and Pokol, György and Madarász, János and Marincaș , Laura and MEREU, Raluca-Anca and Mihály, Judith and PAPP, Judit and Simon-Várhelyi, Melinda and Tötös, Róbert and TOMOAIA- COTIŞEL, Maria}, doi = {10.24193/subbchem.2022.4.21}, journal-iso = {STUD UNIV BABES-BOLYAI CHEM}, journal = {STUDIA UNIVERSITATIS BABES-BOLYAI CHEMIA}, volume = {67}, unique-id = {33645156}, issn = {1224-7154}, year = {2022}, eissn = {2065-9520}, pages = {315-335}, orcid-numbers = {Szalay, Roland/0000-0003-3535-5365; Pokol, György/0000-0003-1597-9808} } @article{MTMT:33644922, title = {Platina-komplexek szintézise aminokkal, alfa-dioximokkal, Schiff-bázisokkal, valamint fizikai-kémiai és biológiai sajátosságainak vizsgálata (Platinum Complexes Synthesis with Amines, alpha-dioximes, Schiff bases and their Physical-Chemical and Biological Study)}, url = {https://m2.mtmt.hu/api/publication/33644922}, author = {Várhelyi, Csaba, ifj. and Pokol, György and Szalay, Roland and F., GOGA and Simon-Várhelyi, Melinda and L.-M., GOLBAN and A., BOGDAN and Huszthy, Péter and Madarász, János and J., PAPP and J.-N., BÁLINT-TROMBITÁS and Mihály, Judith}, journal-iso = {ACTA SCI TRANSYLVANICA}, journal = {ACTA SCIENTIARUM TRANSYLVANICA - MÚZEUMI FÜZETEK (2006-)}, volume = {28 (2020)}, unique-id = {33644922}, issn = {1842-5070}, year = {2022}, pages = {5-18}, orcid-numbers = {Pokol, György/0000-0003-1597-9808; Szalay, Roland/0000-0003-3535-5365; Huszthy, Péter/0000-0001-7305-3312} } @article{MTMT:32561115, title = {Mössbauer study of some novel iron-bis-glyoxime and iron-tris-glyoxime complexes}, url = {https://m2.mtmt.hu/api/publication/32561115}, author = {Várhelyi, Csaba, ifj. and Homonnay, Zoltán and Szalay, Roland and Pokol, György and Szilágyi, Imre Miklós and Huszthy, Péter and KUBUKI, Shiro and GOGA, Firuța and Tötös, Róbert and Simon-Várhelyi, Melinda and Kuzmann, Ernő}, doi = {10.1007/s10751-021-01738-2}, journal-iso = {HYPERFINE INTERACT}, journal = {HYPERFINE INTERACTIONS}, volume = {243}, unique-id = {32561115}, issn = {0304-3843}, abstract = {Dioximes as ligands are used as analytical reagents and serve as models for biological systems as well as catalysts in chemical processes. A number of novel mixed complexes of the type [Fe(DioxH)2(amine)2] have been prepared and characterised by FTIR, 57Fe Mössbauer and mass spectroscopy by us. We have found strong Fe–N donor acceptor interactions and iron occurred in low-spin FeII state in all complexes. Later, we have also found that the incorporation of branching alkyl chains (isopropyl) in the complexes alters the Fe–N bond length and results in high-spin iron(II) state [1, 2]. The question arises: can the spin state of iron be manipulated generally by replacing the short alkyl chains with high volume demand ones in Fe-azomethine-amine complexes? To answer the question we have synthetized novel iron-bis-glioxime and iron-tris-gloxime complexes when long chain alkyl or aromatic ligands replaced the short alkyl ones and studied by 57Fe Mössbauer spectroscopy, MS, FTIR, UV-VIS, TG-DTA-DTG and XRD methods. Novel iron-bis-glyoxime and iron-tris-glyoxime type complexes, [Fe(Diethyl-Diox)3(BOH)2], [Fe(Diethyl-Diox)3(BOEt)2] and [Fe(phenyl-Me-Diox)3(BOEt)2], were synthesized similarly as described in [2]. The FTIR, UV-VIS, TG-DTA-DTG and MS measurements indicated that the expected novel complexes could be successfully synthesized.}, year = {2022}, eissn = {1572-9540}, orcid-numbers = {Homonnay, Zoltán/0000-0001-5299-5394; Szalay, Roland/0000-0003-3535-5365; Pokol, György/0000-0003-1597-9808; Huszthy, Péter/0000-0001-7305-3312; Kuzmann, Ernő/0000-0002-0183-6649} } @article{MTMT:32767890, title = {Thermal behavior of Cu-doped TiO2 gels synthesized by the sol-gel method}, url = {https://m2.mtmt.hu/api/publication/32767890}, author = {PANDELE-CUSU, Jeanina and ATKINSON, Irina and RUSU, Adriana and APOSTOL, Nicoleta and TEODORESCU, Valentin and PREDOANA, Luminita and Szilágyi, Imre Miklós and Pokol, György and ZAHARESCU, Maria}, doi = {10.33224/rrch.2021.66.3.01}, journal-iso = {REV ROUM CHIM}, journal = {REVUE ROUMAINE DE CHIMIE}, volume = {66}, unique-id = {32767890}, issn = {0035-3930}, year = {2021}, pages = {219-229}, orcid-numbers = {Pokol, György/0000-0003-1597-9808} }