Phase formation features in the systems M{sub 2}MoO{sub 4}-Fe{sub 2}(MoO{sub 4}){sub 3} (M=Rb, Cs) and crystal structures of new double polymolybdates M{sub 3}FeMo{sub 4}O{sub 15}

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.01.008· OSTI ID:21372544

Khal'baeva, Klara M ^[1]; Khaikina, Elena G; Kadyrova, Yuliya M ^[1]; Solodovnikova, Zoya A ^[2]; Basovich, Olga M ^[1]

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1. Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Ulan-Ude, 670047 Buryat Republic (Russian Federation)
2. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrent'ev Ave. 3, Novosibirsk 630090 (Russian Federation)

The systems M{sub 2}MoO{sub 4}-Fe{sub 2}(MoO{sub 4}){sub 3} (M=Rb, Cs) were shown to be non-quasibinary joins of the systems M{sub 2}O-Fe{sub 2}O{sub 3}-MoO{sub 3}. New compounds M{sub 3}FeMo{sub 4}O{sub 15} were revealed along with the known MFe(MoO{sub 4}){sub 2} and M{sub 5}Fe(MoO{sub 4}){sub 4}. The unit cell parameters of the new compounds are a=11.6192(2), b=13.6801(3), c=9.7773(2) A, beta=92.964(1){sup o}, space group P2{sub 1}/c, Z=4 (M=Rb) and a=11.5500(9), b=9.9929(7), c=14.513(1) A, beta=90.676(2){sup o}, space group P2{sub 1}/n, Z=4 (M=Cs). In the structures of M{sub 3}FeMo{sub 4}O{sub 15} (M=Rb, Cs), a half of the FeO{sub 6} octahedra share two opposite edges with two MoO{sub 6} octahedra linked to other FeO{sub 6} octahedra through the bridged MoO{sub 4} tetrahedra by means of the common oxygen vertices to form the chains along the a axis. The difference between the structures is caused by diverse mutual arrangements of the adjacent polyhedral chains. - Graphical abstract: Systems M{sub 2}MoO{sub 4}-Fe{sub 2}(MoO{sub 4}){sub 3} (M=Rb, Cs) are non-quasibinary joins of the systems M{sub 2}O-Fe{sub 2}O{sub 3}-MoO{sub 3} where new compounds M{sub 3}FeMo{sub 4}O{sub 15} were revealed. Their structures have diverse mutual arrangements of the adjacent chains of Fe{sup 3+}O{sub 6}, MoO{sub 6} and MoO{sub 4} polyhedra.

• OSTI ID: 21372544
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 3; Other Information: DOI: 10.1016/j.jssc.2010.01.008; PII: S0022-4596(10)00009-5; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CESIUM COMPOUNDS
IRON IONS
IRON OXIDES
MOLYBDATES
MONOCLINIC LATTICES
RUBIDIUM COMPOUNDS
SPACE GROUPS
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
IONS
IRON COMPOUNDS
MOLYBDENUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SYMMETRY GROUPS
TRANSITION ELEMENT COMPOUNDS