SYNTHESES AND CHARACTERIZATION OF IRON(II), COPPER(I) AND RHODIUM(I) COMPLEXES WITH A CHELATING BIDENTATE ISONITRILE LIGAND

The air-stable, odorless and bidentate isonitrile ligand has been synt hesized. The treatment of the isonitrile with iron(II) chloride leads to the corresponding iron(II) complex, whereas the copper(I) and rhodi um(I) complexes are prepared with ligand exchange reactions. By the us e of the molar conductances and the mass spectra, tetrafluoroborate an d chloride anions in the copper(I) and rhodium(I) complexes are ionize d. Judging from the NMR, IR and electronic spectral data, the isonitri le ligand in the complexes serves as a sigma-donor. The copper(I) comp lex is tetrahedral, the rhodium(I) complex is square-planar and the ir on(II) complex is octahedral.