Abstract
The number of homogeneous chemical reactions known to exhibit sustained oscillations* 1 is relatively small,2 and all those reported thus far have either been discovered serendipitously or are variants or combinations of previously known oscillators.3 The recent surge of interest and progress in understanding the nature of chemical oscillation suggests that (a) the discovery of more fundamentally different oscillating reactions would be of major significance as a testing ground for general theories of dynamical behavior and (b) the time may be at hand when the criteria for oscillation are well enough understood to provide practical guidelines for the design of new oscillators. In this communication we present what we believe to be the first report of a systematically designed homogeneous oscillating reaction—the arsenite-io- date-chlorite system.