Dichlorido{2-[(3,5-diphenyl-1H-pyrazol-1-yl-κN²)methyl]pyridine-κN}palladium(II)

Abstract

The title compound, [PdCl(2)(C(21)H(17)N(3))], is a member of a sequence of Pd, Pt and Co dichloride complexes bearing polysubstituted (pyrazol-1-ylmethyl)pyridine ligands. It is shown that there is a correlation between the steric bulkiness of the bidentate (pyrazol-1-ylmethyl)pyridine ligands and the Pd-N(pyrazole) distances, i.e. the larger the ligand, the longer the bond. In contrast, no trend is observed between the steric properties of the ligand and the Pd-N(pyridine) bond lengths.

Structural and theoretical studies of the methoxycarbonylation of higher olefins catalysed by (Pyrazolyl‐ethyl)pyridine palladium (II) complexes

“…The data in Table clearly illustrate the approximately square planar coordination geometry of the metal ion with only small deviations from ideality imposed by the ligand geometry in some cases. The bond lengths and angles are in good agreement with those previously reported for comparable asymmetric palladium (II) complexes . The most significant deviation from the ideal bond angle of 90° is the N–Pd–N bond angle which averages 86.65(12)°.…”

Positional and compositional disorder in a ruthenium(II) piano-stool complex

“…The folding angle of the L ligand defined as the dihedral angle between the Ru1-N1-C5-C6 and Ru1-N3-N2-C6 planes is 125.41 (12) . Relevant values for Co II (Benade et al, 2011), Ni II (Ojwach, Guzei, Benade et al, 2009) and Pd II complexes Segapelo et al, 2009;Spencer et al, 2012) averaged 121 (6) . In none of the four comparisons is the difference statistically significant and the geometrical parameters are therefore typical.…”