Synthesis and Structural Characterization of a Novel Covalently-Bound Corrole Dimer

✍ Scribed by Atif Mahammed; Ilona Giladi; Israel Goldberg; Zeev Gross

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 158 KB
• Volume: 7
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/1521-3765(20011001)7:19<4259::aid-chem4259>3.0.co;2-t

✦ Synopsis

The (triphenylphosphine)cobalt(iii) complex (2) of 5,10,15-tris(pentafluorophenyl)corrole ( 1) is shown to be an valuable precursor to complexes that have not been fully characterized previously. In contrast to other cobalt corroles, aromatic amines can be substituted for the triphenylphosphine in 2 to form six-coordinate bis(amine)cobalt(iii) complexes. This is demonstrated by spectroscopic methods and by X-ray crystallography of the bis-pyridine complex 4, the first of its kind. While 2 and 4 and even their one-electron oxidized complexes are stable, a spontaneous dimerization of the corrole takes place in the absence of strongly bound ligands. The bis-cobalt complex of the novel corrole dimer 6 was fully characterized by spectroscopic methods and X-ray crystallography.