4 Schlenk and Marcus, Ber., 47, 1670 (1914). 354* The symbols (0-, 1-, etc.) throughout the paper refer to the positions of the biphenyl groups on the "1" carbon atom (with three aryl groups) and the "2" carbon atom (with two aryl groups) of the pentaarylethane; thus pentaphenylethane is called 0-, penta-p-biphenylethane is 1,1,1,2,2-, etc. * It will be recalled that hexa-p-biphenylethane is completely dissociated in solution as well as in the solid state; Schlbnk, Weickel and Herzenstein, Ann.,

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The intense, wartime search for new chemical series which might show antimalarial activity has

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Rate of Dissociation of Tetraphenylhydrazine 1163The ether solution was treated with Ñorit and the product crystallized from ether to give a product with m. p. 200-205°, dec.; yield 4.2 g.