TL;DR: In this paper, a mechanism for the polymerization of olefins is proposed, which involves to a first approximation an electronic rearrangement and only small nuclear displacements.
TL;DR: The Contributions of Natta and his School of Polymer Chemistry as discussed by the authors, Vol. 1: Pp. xxii + 1 + 466 + 467 + 468.
Abstract: Stereoregular Polymers and Stereospecific Polymerizations Edited by Giulio Natta and Ferdinando Danusso. (The Contributions of Giulio Natta and his School of Polymer Chemistry.) Vol. 1: Pp. xxii + 1 + 466. Vol.2: Pp. xx + 467–888. (Oxford, London and New York: Pergamon Press, Ltd., 1967.) 315s. net per set of two volumes. Heteroatom Ring Systems and Polymers By H. R. Allcock. Pp. xi + 401. (New York: Academic Press, Inc.; London: Academic Press, Inc. (London), Ltd., 1967.) 132s.