TRANSITION-METAL COMPLEXES OF ISOCYANOPYRIDINES, ISOCYANOQUINOLINES AND ISOCYANOISOQUINOLINES

The complexes trans-[FeI2(CN-3-pyridyl)(4)], trans-[PdI2(CNR)(2)] (CNR = 2-, 3-and 4-isocyanopyridine, 3-isocyanoquinoline, 4-isocyanoquinal dine, 5-isocyanoquinoline, 5-isocyanoisoquinoline) and trans-[PtI2(CNR )(2)] (CNR = 3-isocyanopyridine, 5-isocyanoquinoline) were prepared. T he new complexes are thermally stable up to 150 degrees C or higher. T he molecular structure of trans-[PdI2(CN-3-quinolyl)(2)] was determine d by X-ray crystallography: monoclinic space group P2(1)/c, a = 5.8381 (5), b = 23.685(2), c = 7.2122(6) Angstrom, beta = 97.628(8)degrees, Z = 2, 1170 unique reflections, R = 0.035, R-w = 0.035. In the crystal, the molecular units are packed to form two-dimensional sheets which a re held together by pi stacking of the 3-quinolyl groups.