[Pd(CH₃COO)₂]_nfrom X-ray powder diffraction data

Abstract

The water-insoluble title compound, catena-poly[palladium(II)-di-mu-acetato-kappa4O:O'], [Pd(C2H3O2)2]n, was obtained from a nitratopalladium solution and acetic acid as a pale-pink powder. Ab initio crystal structure determination was carried out using X-ray powder diffraction techniques. Patterson and Fourier syntheses were used for atom location and the Rietveld technique was applied for the final structure refinement. The structure consists of palladium acetate complexes connected into polymeric chains running along b, in which two Pd atoms are bridged by two acetate groups that are in a cis configuration with respect to one another. The unique Pd atom lies on a site with 2/m symmetry and the acetate moieties have imposed m symmetry; these are joined into infinite chains running along the b direction. The shortest Pd...Pd distance in the row is 2.9192 (1) A. The planes of adjacent palladium complexes are inclined towards each other, the angle between the planes being approximately 30 degrees.

Efficient synthesis of fluorinated biphenyl derivatives via Pd-catalyzed Suzuki coupling reactions in aqueous solvents at room temperature

“…The two diphenyl phosphine acetate ligands are each bonded to palladium in bidentate mode, forming five-membered chelated rings. The Pd-O bond distances of 2.076(3) and 2.082(3) Å are slightly longer than those found in other O-coordinated Pd(11) complexes [9][10][11][12]. The Pd-P bond distances of 2.214(1) and 2.216(1) Å are in accordance with the values usually encountered in related compounds [13][14][15].…”

Bis[(diphenylphosphino)acetato-κ2O,P]palladium(II) dichloromethane solvate

“…The two (diphenylphosphino)acetate ligands are each bonded to palladium in a bidentate mode, forming five-membered chelate rings. The Pd-O bond distances of 2.076 (3) and 2.082 (3) Å are slightly longer than those found in other Ocoordinated Pd II complexes (Johansson & Oskarsson, 2001; Kirik et al, 2004). The Pd-P bond distances of 2.214 (1) and 2.216 (1) Å are in accordance with the values usually encountered in related compounds (Fernandez-Rivas et al, 2001;Civiš et al, 1980).…”

Speciation of Pd(OAc)2in ligandless Suzuki–Miyaura reactions

“…6). While trimeric 41 (5) and polymeric 42 structures have both been found in the solid state, its solution structure remains controversial. Early independent studies by Wilkinson and Pandey suggested, by molecular weight measurements, that it exists as a trimer (5) in benzene 43 and acetic acid 44 at ambient temperatures.…”