Ferrocenyl-substituted imine ligands and their reactivity towards Fe 2(CO) 9; crystal structure of FcC(H)C(H)C(H)NC 6H 11 and ( η4R 1C(H)C(H)C(H) NR 2)Fe(CO) 3 (R 1C 6H 5, R 2Fc; R 1Fc, R 2C 6H 11, R 1R 2Fc; Fc( η5-C 5H5) Fe( η5-C 5H 4))

Abstract

The synthesis of 1-azadiene ligands bearing ferrocenyl groups either at the C- or N-terminus or on both sides of the ligand from α,β-unsaturated aldehydes and the corresponding amine is described. The reaction of these imine ligands with Fe 2(CO) 9 produces mononuclear iron complexes of the general formula ( ν 4-1-azadiene)Fe(CO) 3. The molecular structure of one of the 1-azadiene ligands as well as those of three iron complexes were determined by X-ray structure analyses.