General formation of trigonal-prismatic [Ag_6X_5(dppf)_3]~+ (X = Cl, Br, I) through an unusual ligand migration from NiX_2(dppf) to AgOTf

摘要

Use of NiX_2(dppf) (X = Cl, Br, I) as a ligand transfer reagent to AgOTf results in the trigonal prismatic [Ag_6X_5(dppf)_3]OTf complexes. Similar reactions with the dppe analogues give at least 4 different types of dppe-bridged coordination polymers.