Synthesis, crystal structure and reactivity studies of iron complexes with pybox ligands
摘要:
Iron(II) complexes, [Fe(2,6-bis(4,4-dimethyl-1,3-oxazolin-2-yl)pyridine)Cl-2] ((Fe(Me-2-pybox)Cl-2), 3) and [Fe(2,6-bis(4,4-diphenyl-1,3-oxazolin-2-yl)pyridine)Cl-2] ((Fe(Ph-2-pybox)Cl-2), 4), have been synthesized and characterized by X-ray crystallographic analysis. Upon treatment of complex 3 with silver triflate and 4 with acetonitrile, [Fe(Me-2-pybox)(CH3CN)OTf2] (5) and [Fe(Ph-2-pybox)(CH3CN)(2)Cl][FeCl3] (6) were obtained, respectively. The bulkier phenyl substitutes were found not only to cause the elongation of the N-Fe bonds but also influence the reactivity of the Fe center. (C) 2014 Elsevier B.V. All rights reserved.