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Updated: Jun 1, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Dichlorido(4,7-diaza-1-azoniacyclo-nonane-κN,N)palladium(II) p-toluene-sulfonate
Timothy A Anthony1, Hadi D Arman, Judith A Walmsley
1Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA.
Abstract:
The title compound, [PdCl(2)(C(6)H(16)N(3))](C(7)H(7)SO(3)), consists of a Pd(II) atom bonded to two N atoms of the 1,4,7-triaza-cyclo-nonane (TACN) ligand and two chloride ions, which define a distorted square-planar geometry. The third N atom of the TACN ligand is protonated and hydrogen bonds to the p-toluene-sulfonate anion. The Cl-Pd-Cl angle is larger than the N-Pd-N angle. The packing is dominated by layers, which are formed by the criss-crossing of two different hydrogen-bonded chains. One chain is composed of hydrogen-bonded Pd(TACNH)Cl(2) (+) cations, while the second is formed through hydrogen bonding between the p-toluene-sulfonate anion and the Pd(TACNH)Cl(2) (+) cation.
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