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Updated: Jun 8, 2026

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
(Acetato-κ2O,O')dihydroxidoytterbium(III) hemihydrate
Ralph A Zehnder1, Robert A Renn, Frank R Fronczek
1Department of Chemistry, University of Louisiana at Monroe, Monroe, LA 71209, USA. zehnder@ulm.edu
Abstract:
The title compound, [Yb(C(2)H(3)O(2))(OH)(2)]·0.5H(2)O, was obtained via hydrothermal reaction of Yb(CH(3)COO)(3)·H(2)O with NaOH at 443 K. The compound forms two-dimensional layers with six crystallographically independent Yb(III) atoms. Four of these form YbO(8) coordination polyhedra, while the coordination number of the remaining two Yb(III) atoms is 7. Five of these coordination polyhedra are interconnected mainly via hydroxide groups, as they build a narrow inner layer that extends infinitely within the ab plane. The sixth Yb(III) atom resides outside this inner layer and builds a terminal YbO(8) coordination polyhedron on the layer surface. Its coordination environment comprises four carboxylate O atoms belonging to three different acetate entities, three hydroxide groups and one water molecule. Adjacent layers experience weak interactions via hydrogen bonds. The Yb-O distances lie in the range 2.232 (4)-2.613 (5) Å.
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