[(F6acac)Pd(µ-HNC6F5)]2, a Large Family of Polymorphs and Solvates with Short F···F Contacts.

Highly fluorinated [(F6acac)Pd(µ-HNC6F5)]2 was prepared by the reaction of palladium bis(hexafluoroacetylacetonate), Pd(F6acac)2, with pentafluoroaniline. This compound generates a large family of crystalline polymorphs and solvates. In this paper, we present a study on the synthesis, solution phase dynamics, and crystal structures of highly fluorinated [(F6acac)Pd(µ-HNC6F5)]2. Pd3(µ-F6acac)2(µ-HNC6F5)4 is produced as a minor byproduct. We also describe the synthesis and structural characterization of trinuclear Pd3(µ-F6acac)3[µ-(CF3)2C=N]3 prepared by the reaction of Pd(F6acac)2 with hexafluoroacetone imine.