High-temperature, high-pressure hydrothermal synthesis, crystal structure, and infrared and NMR spectroscopy of a barium lead borate with a 2D layer structure: [Ba3Pb(H2O)][B11O19(OH)3]

Yu Chen Kuo, Hsin Kuan Liu, Sue Lein Wang, Kwang Hwa Lii

Research output: Contribution to journalArticlepeer-review

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Abstract

With a high-temperature, high-pressure hydrothermal technique, a new barium lead borate, [Ba3Pb(H2O)][B11O19(OH)3] (1), has been synthesized and characterized by single-crystal X-ray diffraction, and infrared and solid-state NMR spectroscopy. The structure of1contains planar thick layers of borates with the Ba2+cations at sites in the inter- and intralayer space. Each layer consists of three single sheets. The central sheet is very corrugated and is built up from the fundamental building block (FBB) . On both sides of the central sheet there are borate single chains formed of the very rare FBB viacorner-sharing. This FBB was first observed in a high-pressure polymorph of CaB2O4. These chains are linked into a sheet by PbO5(H2O) polyhedra, which are further linked to the central sheet by sharing vertices between triangles and tetrahedra to form a thick layer. The IR spectrum shows the presence of hydroxyl groups of HBO4, water molecules, BO3triangles, and BO4tetrahedra. The presence of BO3and BO4polyhedra was also confirmed by11B MAS NMR spectroscopy.

Original languageEnglish
Pages (from-to)6220-6226
Number of pages7
JournalDalton Transactions
Volume49
Issue number19
DOIs
StatePublished - 21 May 2020

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