Related Experiment Video
Updated: Jun 13, 2025

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
Published on: December 29, 2016
Molecular Bis(chalcogenido) Titanates of Te, Se, and S
Matthew R Mena1, Mrinal Bhunia1, Michael R Gau1
1Department of Chemistry, University of Pennsylvania, 231 S 34th St, Philadelphia, Pennsylvania, 19104 United States.
Abstract:
A series of titanate cisoid bis(chalcogenidos) (Ch = Te, Se, and S) complexes supported by the β-diketiminate ligand BDI- = [ArNC(CH3)]2CH (Ar = 2,6-iPr2C6H3) are readily assembled via treatment of the TiIII precursor (BDI)Ti(CH2SiMe3)2 with 2.5 equiv of elemental "Ch" source and 1 equiv of reductant in the presence of crown-ether. In the absence of the electride, Te or S addition to (BDI)Ti(CH2SiMe3)2 results instead in the isolation of a mononuclear tellurido-tellurolate [(BDI)Ti(=Te)(TeCH2SiMe3)] and the bridging sulfido-thiolate complex [(BDI)Ti(SCH2SiMe3)(μ-S)]2, respectively. In the case of Se, the rare selenido-perselenoate complex [(BDI)Ti(=Se)(η2-SeSeCH2SiMe3)] was isolated. In addition to crystallographically and spectroscopically characterizing all of the complexes, we demonstrate the latter species to be likely intermediates in the formation of [(BDI)Ti(Ch)2]- via the addition of electride.
More Related Videos
12:30Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
04:09Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics
Published on: August 30, 2024
Related Concept Videos
Predicting Molecular Geometry
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Preparation and Reactions of Sulfides
Properties of Transition Metals
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,...
VSEPR Theory and the Effect of Lone Pairs