57412-10-9Relevant academic research and scientific papers
Synthesis and properties of 5-(3-pyridyl)porphyrinatoruthenium(II) tetramers
Funatsu, Kenji,Yasuda, Naomi,Ichimura, Akio,Santo, Ryoko,Sasaki, Yoichi,Imamura, Taira
experimental part, p. 1556 - 1562 (2009/06/28)
5-(3-Pyridyl)porphyrinatoruthenium(II) tetramers, [{Ru(3-PyT 3porph)(CO)}4] (1), [{Ru(3-PytB3porph)(CO)} 4] (2), [{Ru(3-PyHex3porph)(CO)}4] (3), and [{Ru(3-PytB3porph)(py)}4] (4) were prepared. The structures of the isolated tetramers were determined to be rhombic shaped with two chemically nonequivalent porphyrinatoruthenium(II) subunits by 1HNMR, IR, and ESI-MS measurements. The tetramers were stable in benzene at 70 °C. However, the tetramers reacted with a large excess of pyridine to give two geometrical isomers of porphyrinatoruthenium(II) in dichloromethane at room temperature as observed by 1H NMR spectrometry. U V-vis spectra of the tetramers showed splitting or broadening of the Soret band due to excitonic interactions. Stepwise oxidations of the porphyrin rings or the ruthenium ions in the cyclic tetramer skeleton were observed in cyclic voltammograms.
