Related Experiment Video
Updated: Jun 13, 2025

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
A Linear Metallocene of Sc(II) Supported by [C5Me4(SiMe2tBu)]1- Ligands
Joseph Q Nguyen1, Ahmadreza Rajabi1, Anthony J Wang1
1Department of Chemistry, University of California, Irvine, California 92697-2025, United States.
None:
Reduction of [C5Me4(SiMe2tBu)]2ScI with KC8 generates the first example of a neutral, linear metallocene of scandium analogous to ferrocene, namely [C5Me4(SiMe2tBu)]2Sc. X-ray diffraction studies, spectroscopic analyses, and DFT calculations are consistent with a Sc(II) complex. [C5Me4(SiMe2tBu)]2Sc reacts reversibly with N2 to provide the end-on (N═N)2- complex {[C5Me4(SiMe2tBu)]2Sc}2(μ-η1:η1-N2) and gives a rare example of a crystallographically characterizable Sc(III) terminal hydroxide, namely [C5Me4(SiMe2tBu)]2Sc(OH), as a hydrolysis product. The analogous linear Ca(II) metallocene [C5Me4(SiMe2tBu)]2Ca was synthesized and characterized for comparison.
More Related Videos
09:37Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
12:43The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
Related Concept Videos
Properties of Organometallic Compounds
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation...
Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Preparation and Reactions of Sulfides
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...