𝔖 Bobbio Scriptorium
✦   LIBER   ✦

ChemInform Abstract: A New Structure Type of RE4B4O11F2: High-Pressure Synthesis and Crystal Structure of La4B4O11F2.

✍ Scribed by Almut Haberer; Reinhard Kaindl; Oliver Oeckler; Hubert Huppertz

Publisher
John Wiley and Sons
Year
2010
Weight
22 KB
Volume
41
Category
Article
ISSN
0931-7597

No coin nor oath required. For personal study only.

✦ Synopsis

new title compound are obtained from a mixture of La2O3, B2O3, and LaF3 in the molar ratio 5:6:2 (Walker-type multianvil apparatus, 6 GPa, 1300 °C, 10 min). La4B4O11F2 crystallizes in the monoclinic space group P21/c with Z = 8. The crystal structure contains BO3 groups connected by BO4 tetrahedra via common vertices, B 2 O 5 units, and isolated BO 3 groups. The structure shows a wave-like modulation along the b-axis generated by the orientation of trigonal BO3 groups and BO4 tetrahedra.

📜 SIMILAR VOLUMES

High-Pressure Preparation, Crystal Struc
High-Pressure Preparation, Crystal Structure, and Properties of α-(RE)2B4O9 (RE=Eu, Gd, Tb, Dy): Oxoborates Displaying a New Type of Structure with Edge-Sharing BO4 Tetrahedra
✍ Holger Emme; Hubert Huppertz 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 322 KB 👁 1 views

## Abstract High‐pressure/high‐temperature conditions of 10 GPa and 1150 °C were used to synthesize the new rare‐earth oxoborates __α__‐(RE)~2~B~4~O~9~ (RE=Eu, Gd, Tb, Dy) in a Walker‐type multianvil apparatus. Single‐crystal X‐ray structure determination of __α__‐(RE)~2~B~4~O~9~ (RE=Eu, Gd, Tb) re