Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Ludmila S. Ivashkevich"'
Autor:
Tatiyana V. Serebryanskaya, Hanna A. Belavusava, Yuri V. Grigoriev, Sergei V. Voitekhovich, Ludmila S. Ivashkevich, Oleg A. Ivashkevich
Publikováno v:
Журнал Белорусского государственного университета: Химия, Iss 2, Pp 38-51 (2022)
Complexes [MII(2-pytz)Cl2] (M(II) = Pt, Pd; 2-pytz = 2-(tetrazol-1-yl)pyridine) were synthesised via direct interaction of the corresponding metal chlorides (K2PtCl4 or PdCl2) with 2-pytz under ambient conditions. RuCl3 does not react with 2-pytz und
Externí odkaz:
https://doaj.org/article/29452675d0504268bb442cd355341d16
Autor:
Evgeny Y. Grigoriev, Ludmila S. Ivashkevich, Alexander S. Lyakhov, Inna M. Grigorieva, Yuri V. Grigoriev, Oleg A. Ivashkevich
Publikováno v:
Журнал Белорусского государственного университета: Химия, Iss 2, Pp 19-29 (2022)
Drawing the experience of 5-phenyl- and 5-pyridyltetrazoles, it was shown that classical nitration-reduction methods in combination with typical alkylation reactions of tetrazole derivatives can be used to obtain multitopic polynuclear tetrazole-cont
Externí odkaz:
https://doaj.org/article/7d44cbc30e1e467aa098f26adae9d509
Autor:
Sergei V. Voitekhovich, Mikhail M. Degtyarik, Alexander S. Lyakhov, Ludmila S. Ivashkevich, Yuri V. Grigoriev, Oleg A. Ivashkevich
Publikováno v:
Журнал Белорусского государственного университета: Химия, Iss 2, Pp 10-18 (2022)
Novel tripodal ligands (R1N4CS)3CH, where R1 = Me, Ph, were synthesised by alkylation of 1-R-tetrazol-5-thioles with iodoform in alkaline media. These ligands were identified based on data of elemental analysis, nuclear magnetic resonance spectroscop
Externí odkaz:
https://doaj.org/article/686343f558a9476c8e1550d818db50c0
Autor:
Mikhail M. Degtyarik, Alexander S. Lyakhov, Inna M. Grigorieva, Ludmila S. Ivashkevich, Yuri V. Grigoriev, Oleg A. Ivashkevich
Publikováno v:
Журнал Белорусского государственного университета: Химия, Iss 1, Pp 83-95 (2022)
Complexes [Сu(NCS)2L3], [Сu(NO3)2L4] and [Cu(NCS)2L4]·L have been prepared by direct synthesis involving the interaction of metallic copper, ammonium salts NH4X (Х = NCS, NO3) and 1-tert-butyl-1H-1,2,4-triazole (L). Their composition and structur
Externí odkaz:
https://doaj.org/article/718ad5c0edb74eebb09e2ee68a037396
Autor:
Vladislav A. Budevich, Sergei V. Voitekhovich, Alexander V. Zuraev, Vadim E. Matulis, Vitaly E. Matulis, Alexander S. Lyakhov, Ludmila S. Ivashkevich, Oleg A. Ivashkevich
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 17, Iss 1, Pp 385-395 (2021)
Tetrazolium-5-aminides have been prepared by the tert-butylation of 5-aminotetrazole and its N-methyl derivatives by the t-BuOH/HClO4 system followed by the treatment of the tetrazolium salts by alkali. The mesoionic compounds have been found to show
Externí odkaz:
https://doaj.org/article/4aaefbff75a74d36af0b57beed206cbc
Autor:
Mikhail M. Degtyarik, Andrey N. Bogatikov, Sergei V. Voitekhovich, Alexander S. Lyakhov, Ludmila S. Ivashkevich, Yuri V. Grigoriev, Oleg A. Ivashkevich
Publikováno v:
Журнал Белорусского государственного университета: Химия, Iss 1, Pp 64-73 (2020)
A novel facile method for the synthesis of 1-iso-propyl-1H-1,2,4-triazole (L) is described. This method is based on alkylation of 1,2,4-triazole with isopropyl alcohol in sulfuric acid media. It allows to synthesize the target product selectively wit
Externí odkaz:
https://doaj.org/article/403d662c3ceb4f3583f33aae0fe24205
Autor:
Alexander V. Zuraev, Yuri V. Grigoriev, Inna M. Grigorieva, Lyubov I. Pan’ko, Ludmila S. Ivashkevich, Alexander S. Lyakhov, Oleg A. Ivashkevich
Publikováno v:
Журнал Белорусского государственного университета: Химия, Iss 1, Pp 67-75 (2018)
The method for synthesis of copper poly-5-vinyltetrazole salt (Cu-PVT) which based on interaction between the aqueous solutions of sodium poly-5-vinyltetrazolate and Сu(NO3)2 was developed. By using of the solutions of Сu(NO3)2 with a concentration
Externí odkaz:
https://doaj.org/article/1455876082d74e9696bd30abdde7d998
Autor:
Alexander S. Lyakhov, Anastasiya P. Mosalkova, Mikhail M. Degtyarik, Ludmila S. Ivashkevich, Pavel N. Gaponik
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 11, Pp m1397-m1398 (2009)
The title cobalt(II) complex, [CoCl2(C3H6N4O)4], was obtained from metallic cobalt by direct synthesis. There are two Co atoms in the asymmetric unit, each lying on an inversion centre and adopting a distorted octahedral coordination. Classical and n
Externí odkaz:
https://doaj.org/article/0dc484702cf44782871dfeea5e8ee3a2
Autor:
Oleg A. Ivashkevich, Pavel N. Gaponik, Anastasiya P. Mosalkova, Alexander S. Lyakhov, Ludmila S. Ivashkevich
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 2, Pp m236-m236 (2009)
The asymmetric unit of the title compound, [CoCl2(C3H6N4)]n, contains two Co atoms, both lying on inversion centres, two Cl atoms and one 1,5-dimethyltetrazole ligand. The coordination polyhedra of both Co atoms adopt flattened octahedral geometry, w
Externí odkaz:
https://doaj.org/article/7a15dead55734927b45e5ad3b4993be2
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 8, Pp m1044-m1045 (2008)
The crystal structure of the title polymeric complex, [CuCl2(C3H6N4O)2]n, was obtained by the Rietveld refinement from laboratory X-ray powder diffraction data collected at room temperature. The unique CuII ion lies on an inversion center and is in a
Externí odkaz:
https://doaj.org/article/b35da3c5a2964aa0907979aecb6ee3c2