Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5226
Title: Hydrothermal synthesis of new rare earth silicate fluorides: A novel class of polar materials
Authors: McMillen, Colin D.
Eanes, Mehtap
Stritzinger, Jared T.
Kolis, Joseph K.
Keywords: Hydrothermal
Polar crystals
Rare earth silicate
Silicate fluoride
Single crystal structure
Publisher: Academic Press Inc.
Source: McMillen, C. D., Eanes, M., Stritzinger, J.T. and Kolis, J. W. (2012). Hydrothermal synthesis of new rare earth silicate fluorides: A novel class of polar materials. Journal of Solid State Chemistry, 195, 155-160. doi:10.1016/j.jssc.2012.02.057
Abstract: Polar crystals provide an interesting avenue for materials research both in the structures they form and the properties they possess. This work describes the hydrothermal synthesis and structural characterization of three novel silicate fluorides. Compound (1), LiY 3(SiO 4) 2F 2 crystallizes in space group C2/c, with a=17.651(4) Å, b=4.8868(10) Å, c=11.625(2) Å and β=131.13(3)°. BaY 2(Si 2O 7)F 2 (2) crystallizes in space group P-1, with a=5.1576(10) Å, b=6.8389(14) Å, c=11.786(2) Å, α=93.02(3)°, β=102.05(3)° and γ=111.55(3) °. Finally, the structure of Ba 2Y 3(SiO 4) 2F 5 (3) was determined in the polar orthorhombic space group Pba2, having unit cell parameters a=8.8864(18) Å, b=12.764(3) Å and c=5.0843(10) Å. The structures are compared based on their building blocks and long range polarities. Aligned silicate tetrahedra segregated into a single layer in (3) impart the observed polarity.
URI: http://dx.doi.org/10.1016/j.jssc.2012.02.057
http://hdl.handle.net/11147/5226
ISSN: 0022-4596
0022-4596
1095-726X
Appears in Collections:Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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