Structure de l'hydroxyborate de thallium hydraté, Tl[B3O4(OH)2].0,5H2O

Abstract

V. PATHANASIN, S. THANOMKUL AND S. PRAMATUS 685Abstract. Mr=343"8, orthorhombic, Pnma, a= 13.41 (2) T1B30 s in which the three-dimensional network is built of B30 3 units, formed by one tetrahedron and two triangles.

Syntheses and Crystal Structures of Two New Bismuth Hydroxyl Borates Containing [Bi2O2]2+ Layers: Bi2O2[B3O5(OH)] and Bi2O2[BO2(OH)]

“…All the bond distances and angles are in the normal ranges, and the bond lengths are 1.34–1.41 Å for those related to the BO 3 group and 1.44–1.51 Å in the BO 4 group (Table S3, Supporting Information). These three borate groups connect to one another by sharing corners, forming a three-membered ring fundamental building block (FBB), [B 3 O 6 (OH)] 4– , which can be expressed as 3:[(3:2Δ + T )]. , This kind of three-ring FBB is common in polyborates. , The FBBs are further connected by sharing corners (O2 atoms), resulting in an infinite zigzag chain along the a direction, as shown in Figure a. The main chain comprises the alternating connection of B(1)O 4 and B(3)O 3 , while B(2)O 2 (OH) triangles appear as side branches with terminal OH groups.…”

Crystal Structure of Thallium Triborate, TIB3O5

“…So, before examining the crystal growth and the physical properties of TBO, an accurate determination of its structure was necessary. Furthermore, a comparison with its hydrated precursor, Tl[B O (OH) ] · 0.5H O, the structure of which is known (6), and the parent compounds LBO and CBO will be presented.…”