Platinum(II) and palladium(II) compounds derived from [(η5-C5H5)Fe{(η5-C5H4)-CH=N-CH2-CH2-OH}]

The reactions of the novel ferrocenyl ligand: [(eta(5)-C5H5)Fe{(eta(5)-C5H4)-CH=N-CH2-CH2-OH}] (1) with platinum(II) and palladium(II) salts are described. These reactions have allowed us to isolate and characterize the coordination complexes: [Pt{[(eta(5)-C5H4)-CH=N-CH2-CH2-OH]Fe(eta(5)-C5H5)}Cl-2(dmso)] (2), [Pd{[(eta(5)-C5H4)-CH=N-CH2-CH2-OH]Fe(eta(5)-C5H5)}(2)Cl-2] (3) and the cyclopalladated derivative: [Pd{[(eta(5)-C5H3)-CH=N-CH2-CH2-OH]Fe(eta(5)-C5H5)}(mu-Cl)](2) (4). Compound 4 reacts with Fe(eta(5)-C5H5)}Cl(L)] (L = py-d(5) (5) or PPh3 (6)) and [Pd{[(eta(5)-C5H3)-CH=N-CH2-CH2-OH]Fe(eta(5)-C5H5)}(dppe)]Cl (7), which contain a five-membered metallacycle with a sigma(Pd-C-sp2,C-ferrocene) bond. The reactions of 4 with tert-butylisonitrile or the alkynes: R=C=C-R (with R = Et, Ph or CO2Me) are also described and produced [Pd{[(eta(5)-C5H3)-CH=N-CH2-OH]Fe(eta(5)-C5H5)}Cl-CH2-OH]Fe(eta(5)-C5H5)}Cl(L)] (with R = Et (9), Ph (10) or CO2Me (11)). All the compounds included in this work were characterized by elemental analyses, infrared and NMR spectroscopy. The X-ray crystal structures of 1, 6, 8 and 10 are also reported. (C) 2000 Elsevier Science S.A. All rights reserved.