How Fast Do Metal Organic Polyhedra Form in Solution? Kinetics of [Cu_2(5-OH-bdc)_2L_2]_(12) Formation in Methanol

摘要

The faceted polyhedra, commonly referred to as nanoballs (NBs) represent a unique subset of metal-organic materials (MOMs) in that they are discrete structures thus allowing for the investigation of solution properties due to the high solubility in a variety of solvents. In addition, the fact that these discrete structures are composed of M_2(RCO_2) type paddlewheel clusters (where M is a metal cation and RCO_2 is an organic carboxylic acid) allows for tunability in both dimensionality and function through variation in the structural properties of the organic ligand. With this in mind, a wide variety of NBs have been synthesized utilizing Cu~(2+) and 1,3 benzendicarboxylate ligands (bdc) due to the propensity for Cu~(2+) to form the paddle wheel geometry with carboxylate ligands. To date, CuNBs have been prepared with substituents at the 5-postion of the bdc that contain -NH_2, -rm-butyl, -NO_2, -SO_3, -OCH_3, -OH, -C_(12)H_(25), -o-napthyl, and -o-benzyl.