期刊
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
卷 14, 期 6, 页码 509-512出版社
WORLD SCI PUBL CO INC
DOI: 10.1142/S1088424610002331
关键词
demetalation; free-base corrole
资金
- Research Council of Norway
- National Research Fund of the Republic of South Africa
Long known in various metal-complexed forms, beta-octabromo-meso-tris(pentafluorophenyl) corrole, H-3[Br8TPFPC], has not been available as a free ligand until now. It can be prepared in high yield (86%) via reductive demetalation (conc. H2SO4, FeCl2) of Mn[Br8TPFPC]. Interestingly, the same conditions did not result in demetalation of the analogous copper complex, which may be contrasted to the behavior of many other copper corroles, which demetalate cleanly. X-ray crystallographic analysis revealed a unique half-saddled conformation, wherein two of the pyrrole rings on one side of the direct pyrrole-pyrrole linkage are strongly tilted up and down relative to each other, whereas the other two pyrrole rings are roughly in the mean plane of the macrocycle.
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