Abstract
A rigid polymer with pending piperidine-N-oxy1 groups has been synthesized by polymeriza- tion of the appropriately substituted isocyanide catalyzed by nickel(I1) salts. The rigid high-spin polymer has been characterized by ESR spectroscopy and magnetic susceptibility (x,) measurements. The l/Xm versus T plot obeys the Curie law, passing through the origin. Despite the touching of the pending groups and the expectation of a cooperative effect, this high-spin polymer is paramagnetic with an estimated spin density of 1.3-2.4 X 1021 spins/g.
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