Reactivity of polynuclear palladium carboxylate complexes towards acetonitrile: synthesis and X-ray study of Pd sub(2)(C sub(6)H sub(4)- o-C(&z.dbd; NH)CH sub(3)) sub(2)(CH sub(3)CO sub(2))d2and Pd sub(5)(CH sub(3)C(&z.db d; N)OC(&z.dbd; N)CH sub(3))(NO)(NO sub( 2)) sub(x)(RCO sub(2)) sub(7-x)

Reactions of the polynuclear palladium carboxylate complexes (binary palladium carboxylates and palladium nitrosyl carboxylates) with acetonitrile in some common organic solvents are described. It was found that reaction of palladium acetate Pd sub(3)( mu -CH sub(3)CO sub(2)) sub(6) with acetonitrile and benzene leads to the formation of a binuclear complex Pd sub(2)(C sub(6)H sub(4)- o-C(&z.dbd; NH)CH sub(3)) sub(2)(CH sub(3)CO sub(2)) sub(2) containing molecules of orthometallated 1-phenylethanimine formed as a result of C-C-coupling of acetonitrile and benzene. Nitrosyl carboxylate complexes Pd sub(4)(NO) sub(2)(RCO sub(2)) sub(6) promote more complicated transformations of acetonitrile that leads to the formation of coordinated acetimidic anhydride, which was found in Pd sub(5)(CH sub(3)C(&z.db d; N)OC(&z.dbd; N)CH sub(3))(NO)(NO sub( 2)) sub(x)(RCO sub(2)) sub(7-x) clusters. Structures of all the complexes contained products of acetonitrile transformations and a new palladium nitrosyl carboxylate Pd sub(4)(NO) sub(2)(cyclo-C sub(6)H sub(11)CO sub(2)) sub(6) was studied with XRD. Analysis of the structures allowed finding a "building block" of palladium nitrosyl carboxylate clusters, that is a 4-nuclear metal chain -Pd( mu -RCO sub(2)) sub(2)Pd( mu -NO)( mu -RCO sub(2))Pd( mu -RCO sub(2)) sub(2)Pd-.