Related Experiment Video
Updated: May 26, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
{1,2-Bis[(3,5-dimethyl-1H-pyrazol-1-yl-κN)meth-yl]benzene}-dichloridozinc(II)
Abstract:
The title zinc complex, [ZnCl(2)(C(18)H(22)N(4))], contains a bidentate 1,2-bis(3,5-dimethyl-1H-pyrazol-1-ylmeth-yl)benz-ene ligand that binds to the zinc atom, forming a nine-membered metallocyclic ring. The geometry about the Zn atom is distorted tetra-hedral, with the largest deviation observed in the magnitude of the Cl-Zn-Cl angle. Similar distortions are observed in the cobalt analogue and related zinc compounds containing metallocyclic rings with more than six members. The copper analogue exhibits a more severe distortion of the metal coordination sphere than is observed in the title compound.
Related Concept Videos
Hydrolysis of Chlorobenzene to Phenol: Dow Process
Reactions at the Benzylic Position: Halogenation
Reactions at the Benzylic Position: Oxidation and Reduction
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Diazonium Group Substitution: –OH and –H
Carboxylic Acids to Methylesters: Alkylation using Diazomethane

