期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 692, 期 1-3, 页码 166-174出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2006.04.045
关键词
cobalt complex; porphyrinoid; octaphyrin
Some meso-tetraphenyloctaphyrin(1.0. 1.0. 1.0. 1.0)s and their Co(II) complexes were prepared and characterized on the basis of the (1)H NMR spectra and X-ray crystallography. These octaphyrins have a figure eight structure. The methyl and methylene protons directly bound to the bipyrrole beta-position at the crossing point of the figure eight loop were very close to Co(H) and showed their (1)H NMR resonances in the range of 30-300 ppm. The insertion of Co(II) into the octaphyrin with mixed 2,2'-bipyrrole units of different substitution pattern induced transposition of the sterically more congested 2,2'-bipyrrole unit from the crossing point of the figure eight loop to the periphery. (c) 2006 Elsevier B.V. All rights reserved.
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