Abstract
It is shown that the activity of the three component soluble catalyst system WCl6+ROH+Al(C2H5)tCl3−n in ring opening polymerization of cyclopentene increases as the electron acceptor properties of the organoaluminium compound increases, and as its reducing power decreases. It was found from the electronic absorption spectra and elementary analysis that when WCl6 reacts with an excess of ethanol ethoxychlorides of five valent tungsten are formed. From phenol under comparable conditions phenoxychlorides of six valent tungsten are obtained and the degree of substitution of phenoxyl groups for chlorine ions is not more than three.
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