Further investigation into the N-C oxidative addition reaction occurring in (PNP)RhX complexes

INOR 374

Anthony L. Fernandez, anthony.fernandez@merrimack.edu1, Oleg V. Ozerov, ozerov@brandeis.edu2, and Bruce M. Foxman2. (1) Department of Chemistry, Merrimack College, North Andover, MA 01845, (2) Department of Chemistry, Brandeis University, MS 015, Brandeis University, 415 South St., Waltham, MA 02454
We have previously reported that oxidative addition of an N-C bond to Rh(I) [Z = Me, F; R = i-Pr; X = Cl] occurs at room temperature in both solution and the solid state. When the oxidative addition reaction occurred in a single crystal, only one of the two independent molecules in the asymmetric unit reacted at room temperature! We now present an in-depth study of the generality and selectivity of this reaction. The para-substituent (Z) on the PNP ligand backbone, the groups attached to the phosphine (R), and the halogen (X) on the rhodium have been varied and the solution and solid state reactivities of these complexes have been studied. Low temperature x-ray diffraction has been used to investigate the solid state structures of these complexes. The results of these studies will be used to gain insight into the factors which influence this reaction.