Synthesis and structural characterization of trans-bis[1,3-bis(methoxyethyl)-4,5-bis(2,4,6-trimethylphenyl)imidazolidin-2-ylidene]dichloro-palladium(II)

A Pd(II) complex of a new N-heterocyclic carbene (NHC) ligand with bulky substituents and functionalized methoxy-donor side arms has been synthesized and characterized by elemental analyses, H-1 and C-13 NMR, and IR spectroscopy. Molecular and crystal structures of the title complex have been determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic space group P2(1/)c, with a = 15.927(2), b = 8.489(2), c = 20.309(5) angstrom, beta = 99.213(2)degrees, Z = 2, D-x = 1.253 g cm(-3). The palladium atom is situated on an inversion center. There are several weak intramolecular C-H... N/O interactions.