New compounds Li3Ba2Bi3(XO4)8 (X = Mo, W): synthesis and properties

Tatiyana S. Spiridonova; Aleksandra A. Savina; Yulia M. Kadyrova; Elena P.  Belykh; Elena G. Khaikina

doi:10.17308/kcmf.2021.23/3306

Tatiyana S. Spiridonova Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation https://orcid.org/0000-0001-7498-5103
Aleksandra A. Savina Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation; Skolkovo Institute of Science and Technology, 30 Bolshoy Boulevard, bld. 1, Moscow 121205, Russian Federation https://orcid.org/0000-0002-7108-8535
Yulia M. Kadyrova Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation; Dorji Banzarov Buryat State University (BSU), 24a Smolin str., Ulan-Ude 670000, Republic of Buryatia, Russian Federation https://orcid.org/0000-0002-0106-8096
Elena P. Belykh Dorji Banzarov Buryat State University (BSU), 24a Smolin str., Ulan-Ude 670000, Republic of Buryatia, Russian Federation
Elena G. Khaikina Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation ; Dorji Banzarov Buryat State University (BSU), 24a Smolin str., Ulan-Ude 670000, Republic of Buryatia, Russian Federation https://orcid.org/0000-0003-2482-9297

DOI: https://doi.org/10.17308/kcmf.2021.23/3306

Keywords: triple molybdates and tungstates, solid-state synthesis, powder X-ray diffraction study, thermal properties, ionic conductivity

Abstract

New compounds Li₃Ba₂Bi₃(XO₄)₈(Х = Mo, W) were obtained by the ceramic technology. Those are the first representatives of the ternary molybdates and tungstates Li₃Ba₂Bi₃(XO₄)₈ family, which contain different from the rare earth elements trivalent metal. The sequence of chemical transformations occurring during the Li3Ba2Bi3(WO4)8 formation has been established. The primary characterization of the obtained phases was carried out and their ion-conducting properties were studied. The synthesized compounds are shown to melt incongruently, isostructural to the lanthanide-containing analogues (structural type of BaNd₂(MoO₄)₄, sp. gr. C²/c) and crystallize in the monoclinic crystal system with unit cell parameters а = 5.2798(1), b = 12.8976(4), c = 19.2272(5) Å, β = 90.978(2)° (Х = Mo), а = 5.2733(2), b = 12.9032(4), c = 19.2650(6) Å, β = 91.512(3)° (Х = W). Li₃Ba₂Bi₃(XO₄)₈ are found to undergo the diffuse first-order phase transitions at 441°C (molybdate)
and 527°C (tungstate), after that their conductivity reaches values of 10^–3–10^–4 S/cm.

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Author Biographies

Tatiyana S. Spiridonova, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation

Leading Engineer,
Laboratory of Oxide Systems, Baikal Institute of Nature
Management, Siberian Branch of the Russian Academy
of Sciences (BINM SB RAS), Ulan-Ude, Russian
Federation; e-mail: spiridonova-25@mail.ru

Aleksandra A. Savina, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation; Skolkovo Institute of Science and Technology, 30 Bolshoy Boulevard, bld. 1, Moscow 121205, Russian Federation

PhD in Chemistry, Researcher,
Laboratory of Oxide Systems, Baikal Institute of Nature
Management, Siberian Branch of the Russian Academy
of Sciences (BINM SB RAS), Ulan-Ude and Skolkovo
Institute of Science and Technology, Moscow, Russian
Federation; e-mail: a.savina@skoltech.ru

Yulia M. Kadyrova, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation; Dorji Banzarov Buryat State University (BSU), 24a Smolin str., Ulan-Ude 670000, Republic of Buryatia, Russian Federation

PhD in Chemistry, Researcher,
Laboratory of Oxide Systems, Baikal Institute of Nature
Management, Siberian Branch of the Russian Academy
of Sciences (BINM SB RAS) and Senior Lecturer of the
Department of General and Analytical Chemistry,
Faculty of Chemistry, Dorji Banzarov Buryat State
University (BSU), Ulan-Ude, Russian Federation;
e-mail:yliychem@yandex.ru

Elena P. Belykh, Dorji Banzarov Buryat State University (BSU), 24a Smolin str., Ulan-Ude 670000, Republic of Buryatia, Russian Federation

Master’s student, Faculty of
Chemistry, Dorji Banzarov Buryat State University
(BSU), Ulan-Ude, Russian Federation; e-mail:elena.
belych1996@yandex.ru

Elena G. Khaikina, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6 Sakhyanova str., Ulan-Ude 670047, Republic of Buryatia, Russian Federation ; Dorji Banzarov Buryat State University (BSU), 24a Smolin str., Ulan-Ude 670000, Republic of Buryatia, Russian Federation

DSc in Chemistry, Head of
Laboratory Oxide Systems, Baikal Institute of Nature
Management, Siberian Branch of the Russian Academy
of Sciences (BINM SB RAS) and Professor of the
Department of Inorganic and Organic Chemistry,
Faculty of Chemistry, Dorji Banzarov Buryat State
University (BSU), Ulan-Ude, Russian Federation;
e-mail: egkha@mail.ru

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