Syntheses and structural characterization of 2,4,6-trimethylaniline complexes of iron carbonyls

摘要

The new 2,4,6-trimethylaniline complexes [Cp*Fe(CO)(2)(NH2C6H2(CH3)(3))](+) (3) and [CpFe(CO)(2)(NH2C6H2(CH3)(3))](+) (4) (Cp* = eta(5)-C-5(CH3)(5); Cp = eta(5)-C5H5) have been synthesized and isolated in high yields as tetrafluoroborate salts. They have been fully characterized by NMR, IR, elemental analysis, thermogravimetric analysis and X-ray crystallography. For comparison purpose, the molecular structure of [CpFe(CO)(2)(NH2CH2C6H4OCH3)](+) (5) has been determined and discussed in relation to those of 3 and 4. Compounds 3 and 5 crystallize in monoclinic P2(1)/c space group, while 4 crystallizes in triclinic P (1) over tilde space group. Compounds 3 and 4 exhibited considerable thermal stabilities at temperatures as high as 170 degrees C, which is close to their melting points. (C) 2014 Elsevier B.V. All rights reserved.