Abstract

The diiodo complex cis-(?5-C5Me5)Re(CO)2I2 undergoes monosubstitution in reaction with arylcopper (ArCu) to produce the corresponding aryl-iodo complexes trans-(?5-C5Me5)Re(CO)2(Ar)I, Ar = phenyl and tolyl. These complexes have been fully characterized by using a combination of elemental analyses and IR, 1H and 13C NMR spectroscopy; additionally trans-(?5-C5Me5)Re(CO)2(Ph)I was studied by X-ray crystallography. This complex crystallizes in the monoclinic space group P 21/m with a = 8.091(2), b = 17.471(4), c= 12.995(3) Å, ? = 93.97(2)°, V= 1832.6(7) Å3 and Dcalc = 2.107 gcm-3 for Z = 4. The refined structure gave R = 2.74% and wR = 2.98% for 2858 observed reflections. Further reaction of the aryl-iodo complexes with MeLi yields the corresponding aryl-methyl derivatives trans-(?5-C5Me5)Re(CO)2(Ar)Me. The full spectroscopic characterization of these complexes is also described in this paper.