|
|||||
|
|
Phase formation features in the systems M2MoO4-Fe2(MoO4)3 (M=Rb, Cs) and crystal structures of new double polymolybdates M3FeMo4O15 |
|
| Authors: | Klara M Khal’baeva Elena G Khaikina Yuliya M Kadyrova Zoya A Solodovnikova |
| Institution: | a Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh’yanova St. 6, Ulan-Ude, 670047 Buryat Republic, Russia b Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrent’ev Ave. 3, Novosibirsk 630090, Russia c Novosibirsk State University, Pirogov St. 2, Novosibirsk 630090, Russia d Buryat State University, Smolin St. 24a, Ulan-Ude, 670000 Buryat Republic, Russia |
| Abstract: | The systems M2MoO4-Fe2(MoO4)3 (M=Rb, Cs) were shown to be non-quasibinary joins of the systems M2O-Fe2O3-MoO3. New compounds M3FeMo4O15 were revealed along with the known MFe(MoO4)2 and M5Fe(MoO4)4. The unit cell parameters of the new compounds are a=11.6192(2), b=13.6801(3), c=9.7773(2) Å, β=92.964(1)°, space group P21/c, Z=4 (M=Rb) and a=11.5500(9), b=9.9929(7), c=14.513(1) Å, β=90.676(2)°, space group P21/n, Z=4 (M=Cs). In the structures of M3FeMo4O15 (M=Rb, Cs), a half of the FeO6 octahedra share two opposite edges with two MoO6 octahedra linked to other FeO6 octahedra through the bridged MoO4 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. |
| Keywords: | Alkali metal Iron Phase formation Non-quasibinary join Double polymolybdate Crystal structure |
| 本文献已被 ScienceDirect 等数据库收录！ | |