Related Experiment Video
Updated: Aug 23, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Tribenzyl{eta(5)-[2-(p-tolyl)prop-2-yl]cyclopentadienyl}zirconium
Jörg Sassmannshausen1, Jörg Rust, Richard Goddard
1Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany.
Abstract:
The title compound, [Zr(C(7)H(7))(3)(C(15)H(17))], (I), crystallizes from light petroleum with two independent molecules in the asymmetric unit. Whereas in the parent molecule, Zr(eta(5)-C(5)H(5))(CH(2)Ph)(3), all three Zr-CH(2)Ph angles are equal, in (I), they differ significantly. In spite of their different environments, both independent molecules in (I) exhibit a small, an expected, and a large Zr-CH(2)Ph angle. The angles are similar to those of the closely related tribenzyl[eta(5)-(benzyldimethylsilyl)cyclopentadienyl]zirconium complex. The smallest Zr-CH(2)Ph angle and the consequently relatively short Zr.C(ipso) distance are indicative of eta(2)-bonding of the benzyl group.
More Related Videos
04:51Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
10:17Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
Published on: February 7, 2019
Related Concept Videos
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group with both...
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction
Thermal and Photochemical Electrocyclic Reactions: Overview
Thermal Electrocyclic Reactions: Stereochemistry
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism