Structure Variation Due to Ligand Flexibility: Syntheses and Structures of the Copper(II) Complexes [Cu(APPy)] and [Cu₂(AEPy)₂] Where APPyH₂ = Bis[3-(2-pyridinecarboxamido)propyl]- methylamine and AEPyH₂ = Bis[3-(2-pyridine- carboxamido)ethyl]methylamine

Abstract

Two new pentacoordinate ligands containing two pyridine 2-carboxamide units connected by −(CH2)n−N(Me)−(CH2)n− links have been synthesized. The ligand with n = 3 affords a monomeric Cu(II) complex, while the one with n = 2 gives rise to a ligand-shared dimer.