Synthesis, characterization and the crystal structure of 1-[(N-methyl-N-aryl)amino]ethylferrocenes

The reactions of ferrocenylketimines [(η5-C5H4CCH3NAr)Fe(η5-C5H5)] (Ar=a variety of substituted phenyls) with methyl-iodide in refluxed dichloromethane followed by reduction with sodium borohydride in absolute ethanol led to [(η5-C5H4CH(CH3)N(CH3)Ar)Fe(η5-C5H5)]. Compound [(η5-C5H4CH(CH3)N(CH3)C6H4Cl-p)Fe(η5-C5H5)] (3d) has been characterized structurally. Compound 3d is monoclinic, space group P21/n, with a=8.908(2) Å, b=13.63(1) Å, c=14.510(3) Å and β=107.03°.