Research Article: Dichlorido(4,7-diaza-1-azoniacyclo­nonane-κ2N4,N7)palladium(II) p-toluene­sulfonate

Date Published: June 01, 2010

Publisher: International Union of Crystallography

Author(s): Timothy A. Anthony, Hadi D. Arman, Judith A. Walmsley.


The title compound, [PdCl2(C6H16N3)](C7H7SO3), consists of a PdII atom bonded to two N atoms of the 1,4,7-triaza­cyclo­nonane (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-toluene­sulfonate 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)Cl2+ cations, while the second is formed through hydrogen bonding between the p-toluene­sulfonate anion and the Pd(TACNH)Cl2+ cation.

Partial Text

For background to complexes of PdII and PtII with 1,4,7-triaza­cyclo­nonane (TACN), see: McAuley & Whitcombe (1988 ▶); Blake et al. (1988 ▶, 1993 ▶); Margulis & Zompa (1992 ▶); Hunter et al. (1988 ▶); Davies et al. (2000 ▶). For the synthesis of TACN, see: Kang & Jo (2003 ▶). For Pd—N and Pd—Cl bond distances in Pd(en)Cl2, see: Iball et al. (1975 ▶).




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