Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Olga N. Kazheva"'
Autor:
Nikita V. Chukanov, Olga N. Kazheva, Nadezhda A. Chervonnaya, Dmitry A. Varlamov, Vera N. Ermolaeva, Igor V. Pekov, Gennadiy V. Shilov
Publikováno v:
Macedonian Journal of Chemistry and Chemical Engineering, Vol 39, Iss 2, Pp 207-216 (2020)
Crystals of the natural zeolite amicite, ideally K4Na4(Al8Si8O32)·10H2O, were ion-exchanged in the reactions with 0.1 N aqueous solutions of AgNO3, RbNO3, CsNO3 and Pb(NO3)2 at 363 K for 24 h. Under these conditions, Cs+ substitutes K+ whereas the m
Externí odkaz:
https://doaj.org/article/340a96db324a402c802b51a5f5a8b946
Publikováno v:
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 79:184-194
Most known compounds with five-coordinated Ti4+ are natural and synthetic titanosilicates. The crystal structure of natural fresnoite, Ba2TiSi2O8 [tetragonal, space group P4bm, a = 8.510 (1) Å, c = 5.197 (1) Å, V = 376.4 (1) Å3, Z = 2], has been r
Autor:
Nikita V. Chukanov, Natalia V. Zubkova, Olga N. Kazheva, Dmitry A. Varlamov, Igor V. Pekov, Dmitriy I. Belakovskiy, Bernd Ternes, Willi Schüller, Sergey N. Britvin, Dmitry Yu. Pushcharovsky
Publikováno v:
The Canadian Journal of Mineralogy and Petrology. 61:177-188
Betzite, ideally Na6Ca2(Al6Si6O24)Cl4, a new cancrinite-group mineral, was discovered in a metasomatically altered (pyrometamorphosed) calcic xenolith, hosted by alkaline basalt at the Bellerberg paleovolcano in the Eastern Eifel region, Rhineland-Pa
Autor:
Nikita V. Chukanov, Sergey M. Aksenov, Olga N. Kazheva, Igor V. Pekov, Dmitry A. Varlamov, Marina F. Vigasina, Dmitry I. Belakovskiy, Svetlana A. Vozchikova, Sergey N. Britvin
Publikováno v:
Mineralogical Magazine. 87:241-251
The new eudialyte-group mineral selsurtite, ideally (H3O)12Na3(Ca3Mn3)(Na2Fe)Zr3□Si[Si24O69(OH)3](OH)Cl⋅H2O, was discovered in metasomatic peralkaline rock from the Flora mountain, northern spur of the Selsurt mountain, Lovozero alkaline massif,
Autor:
Denis M. Chudak, Olga N. Kazheva, Irina D. Kosenko, Gennady V. Shilov, Igor B. Sivaev, Georgy G. Abashev, Elena V. Shklyaeva, Lev I. Buravov, Dmitry N. Pevtsov, Tatiana N. Starodub, Vladimir I. Bregadze, Oleg A. Dyachenko
Publikováno v:
Crystals, Vol 11, Iss 9, p 1118 (2021)
New radical-cation salts based on tetramethyltetrathiafulvalene (TMTTF) and tetramethyltetraselenefulvalene (TMsTSF) with metallacarborane anions (TMTTF)[3,3′-Cr(1,2-C2B9H11)2], (TMTTF)[3,3′-Fe(1,2-C2B9H11)2], and (TMTSF)2[3,3′-Cr(1,2-C2B9H11)2
Externí odkaz:
https://doaj.org/article/a3b9fe5dc9254399aeaabd7894f23550
Autor:
Natalia V. Zubkova, Ch. Schäfer, Olga N. Kazheva, D. Yu. Pushcharovsky, Igor V. Pekov, S. N. Britvin, Nikita V. Chukanov
Publikováno v:
Doklady Earth Sciences. 497:305-309
The crystal structure of a potentially new mineral, the Fe2+-dominant analogue of armalcolite with the idealized formula Fe2+Ti2O5 has been solved. The sample studied originates from a pneumatolytic association related to the lamproite complex of SE
Autor:
Olga N. Kazheva, V. N. Ermolaeva, Nikita V. Chukanov, Gennady V. Shilov, Nadezhda A. Chervonnaya, Dmitry A. Varlamov
Publikováno v:
Crystallography Reports. 66:86-94
The crystal structures of ion-exchange products of the zeolite-group mineral amicite from Khibiny Alkaline Massif with silver and rubidium salts have been studied. The investigated samples are monoclinic (sp. gr. P21 and I2/a); their crystallochemica
Autor:
Natalia V. Zubkova, Rositsa P. Nikolova, Nikita V. Chukanov, Vladislav V. Kostov-Kytin, Igor V. Pekov, Dmitry A. Varlamov, Tatiana S. Larikova, Olga N. Kazheva, Nadezhda A. Chervonnaya, Gennadiy V. Shilov, Dmitry Yu. Pushcharovsky
Publikováno v:
Minerals, Vol 9, Iss 7, p 420 (2019)
Elpidite from the Lovozero alkaline complex, Kola Peninsula, Russia, and Ag-exchanged forms of elpidite from two different localities (Lovozero and Khan Bogdo, Mongolia) were studied by means of single-crystal X-ray diffraction, electron microprobe a
Externí odkaz:
https://doaj.org/article/3f033efee0564bfa8c377ad0721840e8
Autor:
Olga N. Kazheva, Nadezhda A. Chervonnaya, V. N. Ermolaeva, Konstantin V. Van, Dmitry A. Varlamov, Nikita V. Chukanov
Publikováno v:
Russian Journal of Applied Chemistry. 93:595-602
Processes and products of ion exchange of gunterblassite (K,Ca,Ba,Na)3–xFe1–y[(Si,Al)13O25(OH,O)4]·7H2O (microporous silicate, structurally intermediate between smectites and zeolites) and three samples of zeolite gmelinite (Na,K,Ca,Mg)x[(Si,Al)
Publikováno v:
Revista Mexicana de agronegocios, 65 (2), 242-246
The structure of the radical anion salt (RAS) of 7,7,8,8-tetracyanedimethane (TCNQ) with a cation based on 2-amin-5-chloro-pyridine (2-NH2-5-Cl–Py, Am), that is, (N–CH3-2-NH2-5-Cl–Py) (TCNQ) (CH3CN), (I) is presented. Unlike most TCNQ RASs, whi