CRYSTAL-STRUCTURE INVESTIGATION OF TERNARY MOLYBDATES LI3BA2LN3(MOO4)3 (LN = GD, TM)

被引:19
作者
KLEVTSOVA, RF
VASILEV, AD
GLINSKAYA, LA
KRUGLIK, AI
KOZHEVNIKOVA, NM
KORSUN, VP
机构
[1] RUSSIAN ACAD SCI,BURYAT INST NAT SCI,ULAN UDE,USSR
[2] RUSSIAN ACAD SCI,INST PHYS,NOVOSIBIRSK,USSR
关键词
D O I
10.1007/BF00748057
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Monocrystals of Li3Ba2Ln3(MoO4)8 (Ln = Gd, Tm) were synthesized and the crystal structures of these ternary molybdates were solved. These compounds are iso-structural and form monoclinic crystals with space group C2/c, Z = 2. For Ln = Gd: a = 5.2380, b = 12.758, c = 19.151 angstrom, beta = 91.126-degrees, R = 0.444. For Ln = Tm: a = 5.1804, b = 12.614, c = 19.057 angstrom, beta = 91.419', R = 0.045. The structures consist of folded porous layers of Ln polygons, to both sides of which the Mo tetrahedra are attached through common O apices. The bonding between the layers is accomplished by barium and lithium ions. The distribution of the Ln3+, Ba2+, and Li+ ions over the M(1) and M(2) positions leading to the crystal chemical formula Li2(Ba0.85Ln0.15)2 x (Ln0.675Ba0.075Li0.15)4.(MoO4)8 was determined.
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页码:443 / 447
页数:5
相关论文
共 6 条
[1]   BOND-VALENCE PARAMETERS OBTAINED FROM A SYSTEMATIC ANALYSIS OF THE INORGANIC CRYSTAL-STRUCTURE DATABASE [J].
BROWN, ID ;
ALTERMATT, D .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1985, 41 (AUG) :244-247
[2]  
KISELEVA II, 1979, KRISTALLOGRAFIYA+, V24, P1277
[3]  
KOZHEVNIKOVA NM, 1990, ZH NEORG KHIM+, V35, P835
[4]  
PYATENKO YA, 1972, KRISTALLOGRAFIYA+, V17, P773
[5]  
TRUNOV VK, 1986, CRYSTAL CHEM PROPERT, P26
[6]   AN EMPIRICAL-METHOD FOR CORRECTING DIFFRACTOMETER DATA FOR ABSORPTION EFFECTS [J].
WALKER, N ;
STUART, D .
ACTA CRYSTALLOGRAPHICA SECTION A, 1983, 39 (JAN) :158-166