2003年5月
Synthesis and properties of rhodium(III) porphyrin cyclic tetramer and cofacial dimer
INORGANIC CHEMISTRY
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- 巻
- 42
- 号
- 10
- 開始ページ
- 3187
- 終了ページ
- 3193
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1021/ic020652j
- 出版者・発行元
- AMER CHEMICAL SOC
Rhodium(III) porphyrin complexes, [Rh(4-PyT3P)Cl](4) (1) and [Rh(2-PytB(3)P)Cl](2) (2) (4-PyT3P = 5-(4-pyridyl)-10,15,20-tritolylporphyrinato dianion, 2-PytB(3)P = 5-(2-pyridyl)-10,15,20-tri(4-tert-butyl)phenylporphyrinato dianion), were self-assembled and characterized by H-1 nuclear magnetic resonance spectroscopy, infrared spectroscopy, and electron spray ionization-mass spectroscopy methods. The spectroscopic results certified that the rhodium porphyrin complexes 1 and 2 have a cyclic tetrameric structure and a cofacial dimeric structure, respectively. The X-ray structure analysis of 1 confirmed the cyclic structure of the complex. The Soret bands of both oligomers were significantly broadened by excitonic interactions between the porphyrin units, compared to those observed for a corresponding analogue of Rh(TTP)(Py)Cl (TTP = 5,10,15,20-tetratolylporphyrinato dianion, Py = pyridine). Stepwise oxidation of the porphyrin rings in the oligomers was observed by cyclic voltammetry. The oligomers 1 and 2 are very stable in solution, and they slowly undergo reactions with pyridine to give corresponding monomer complexes only at high temperatures (similar to80 degreesC).
- リンク情報
- ID情報
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- DOI : 10.1021/ic020652j
- ISSN : 0020-1669
- Web of Science ID : WOS:000182962800007