The addition of mercuric salts causes a marked change in the radiolytic reactions of aqueous azide ion solution. Hydroxyl radicals and hydrogen atoms are scavenged by the azide ion and mercuric salt, respectively.In order to explain the high yields of nitrogen and mercurous azide in terms of the current theory of water radiolysis, it is suggested that the excited water molecule which might be formed by primary recombination between the H2O+ion and the ejected electron, and by slow electron collision in spur, may be involved. The excited water molecule is assumed tentatively to be a triplet and to behave like a diradical, which with an azide ion gives a comparatively longhyphen;lived complex (N3sngbnd;H2O)(triplet)*.The previous results of the radiolysis of pure azide ion solution have been rediscussed in terms of this new assumption.
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