Synthesis and structure of palladium triflates with coordinated 3,5-dimethylpyrazole

Abstract

We discovered that reacting Pd 3 (μ OOCMe) 3 with two moles of trifluoromethanesulfonic acid (Hotf) and then with four moles of 3,5 dimethylpyrazole (Hdmpz) in acetonitrile and benzene produces, in high yields, [Pd(Hdmpz) 4 ](otf) 2 and Pd(Hdmpz) 4 (HOOCMe) 2 (otf) 2 , respectively. Reacting PhenPd(OOCMe) 2 with Hotf in MeCN yields PhenPd(NCMe) 2 (otf) 2 , where labile acetonitrile molecules are substituted by Hdmpz under mild conditions to form PhenPd(Hdmpz) 2 (otf) 2 . The structures of complexes have been solved on the basis of X ray crystallography data.