Related Experiment Video
Updated: Mar 13, 2026

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
Published on: February 11, 2012
The Indium Borate In19B34O74(OH)11 with T2 Supertetrahedra
Daniela Vitzthum1, Klaus Wurst1, Johannes Prock1
1Institute of General, Inorganic and Theoretical Chemistry, Universität Innsbruck , Innrain 80-82, A-6020 Innsbruck, Austria.
Abstract:
The trigonal indium borate In19B34O74(OH)11 was synthesized in a Walker-type multianvil apparatus under high-pressure/high-temperature conditions of 13 GPa and 1150 °C. The crystal structure could be determined by single-crystal X-ray diffraction data collected at room temperature. In19B34O74(OH)11 crystallizes in the trigonal space group R3̅ (Z = 3) with the lattice parameters a = 1802.49(6) pm, c = 1340.46(5) pm, and V = 3.7716(3) nm3. The structure of In19B34O74(OH)11 contains alternating B-O T2 supertetrahedra units. The presence of hydroxyl groups was confirmed with vibrational spectroscopic methods such as Raman and IR. Besides H2InB5O10, In19B34O74(OH)11 is now the second known compound in the system In-B-O-H.
More Related Videos
Related Concept Videos
Valence Bond Theory
Predicting Molecular Geometry
Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Hybridization of Atomic Orbitals I
Ionic Bonding and Electron Transfer
Coordination Number and Geometry

