Cobalt ammine azides

Another type of complex cobalt ammine including azide groups in the co-ordination were obtained by Linhard and Flygare [124] ... 

Studies of nitrosopentamminecobaitic saits such as red complex [Co(NH3)s (NO)] (N03)ar 0.5HjO. They are not listed in our tables 20a)J.L.Mil ward et al, JCS 1938, 233-6 CA 32, 8296(1938) (Constitution of nitrosopent-ammine cobalt salts, among them the compd listed in the previous reference) 2l)R. Duvai, CR 206, 1652-4(1938) CA 32, 5720 (1938) [Studies of trinitrotriamminocobalt (III) [Co(NHs)3 (NOj)s] (See item Co2 in table B) 22)W.Strecker E.Schwinn,JPraktChem 152, 205-18(1939) CA 33, 5314(1939)1 Introduction of the azide group into complex compds to replace Cl was studied. Among the compds prepd were several ammines such as diamminecadmium(II)azide, diam-minecopper(II) azide, tetramminecopper(II) azide, chloropentamminechrome(lll) azide, hexamminechrome(Ul) azide and hexam-minenickel(II) azide (See items Cdl, Cr5,... 

Joyner et al, "Explosive Sensitivity of Cobalt Ammine Azides , Nature 196, No 4893(1962) 8) M.M. Braidech, "National... 

K3[Co(CN)6] is important in the production of certain lasers.66 Azides of cobalt ammines have been suggested as detonators, but appear to be inferior to lead and silver azides, which are in general use.66... 

Joyner [76], reviewing a series of comparable kinetic studies of four solid cobalt(III) ammine azides, discussed the factors that determine the two alternative decomposition processes that yield either product CoN or cobalt(II) complexes. He concluded that the mechanisms are "independent of the nature of the cation, the nature of the salt and properties dependent on crystal structure." From a very careful appraisal of the evidence, he concluded that the course of the reaction is determined by "the very early interplay between the CoN and cobalt(II) reactions." This conclusion emphasizes the subtlety of the factors controlling decomposition behaviour. 

Attempts at identifying the influence of structme on stability have generally been inconclusive. For example, some alkali metal permanganates with comparable stmctures show similarities of decomposition behaviour [29], while, in contrast, the decompositions of several cobalt(lll) ammine azides show little evidence of structural influences [76], Significant differences in behaviour were found for the various crystal forms of the LiK tartrate hydrates [87] and, also, for the dehydrations of the isomorphic alums [20,43], However, some reactants, for example those prepared by the dehydration of hydrated metal carboxylates [5], may be amorphous to X-rays, thus preventing recognition of any control of stability by crystal structure. 

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