Research Article: [3,3′-Dimesityl-1,1′-(4,5:16,17-dibenzo-3,6,9,12,15,18-hexa­oxaeicosane-1,20-di­yl)diimidazolin-2-yl­idene]dithio­cyanato­palladium(II)

Date Published: May 01, 2009

Publisher: International Union of Crystallography

Author(s): Xiao-Qin Zhang, Mei-Ming Luo.


The coordination geometry of the Pd atom in the title compound, [Pd(SCN)2(C46H54N4O6)], is approximately square-planar. The N-heterocyclic carbene (NHC) metallacrown ether ligand binds to the Pd atom in a trans orientation through the carbene C atoms of the two imidazole rings and generates a 25-membered chelate ring. Two mutually trans S-bound thio­cyanate ligands complete the coordination.

Partial Text

For N-heterocyclic carbene ligands and their complexes, see: Herrmann (2002 ▶); Hahn & Jahnke (2008 ▶). For details of bis-phosphine polyether ligands, see: Alcock et al. (1976 ▶); Powell et al. (1981 ▶); Gray et al. (1995 ▶). For mixed NHC metallacrown ether ligands, see: Nielsen et al. (2003 ▶); Liu et al. (2007 ▶); Wang et al. (2005 ▶). For the use of Pd–NHC complexes in catalysis, see: Herrmann et al. (2002 ▶); Kantchev et al. (2007 ▶). For the synthesis of the ligand precursor, see: Pedersen (1967 ▶); Haque & Rasmussen (1994 ▶).




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