| Popis: |
Reaction of [(η5-Me5C5)MCl2]2 (M Ir or Rh) with 1,2-dicyanoethene-1,2-dithiolate (dcdt2−), 2,2′-biimidazole (biimH2), or 2,2′-bithiazole (bith) affords various d6 complexes in high yield. Pentacoordinate compounds such as [(η5-Me5C5)M(dcdt)] (M Ir or Rh) and hexacoordinate complexes of the type [(η5-Me5C5)M(biimH2)Cl]Cl, (M Ir or Rh) or [(η5-Me5C5)Ir(bith)Cl]Cl have been synthesized and characterized. [(η5-Me5C5)Rh (dcdt)] crystallizes in the orthorhombic space group C2221 with unit cell parameters a = 11.972 (3), b = 15.072 (4), c = 16.456 (5) A. Refinement of 859 observed reflections led to the final values of R = 2.31 and Rw = 3.46%. [(η5-Me5C5)Ir(biimH2)Cl]Cl crystallizes in the orthorhombic space group P212121 with unit cell parameters a = 14.610 (4), b = 14.556 (6), c = 8654 (3) A. Refinement of 1630 observed reflections led to a value of R = 186 and Rw = 2.65%. The biimH2-iridium complex exhibits a characteristic three-legged “piano-stool” arrangement and the dcdt-rhodium complex a flattened basket shaped arrangement. |
