Metal bridge complexes binary complex formation

In coordination chemistry, azido complexes wherein azide ions are coordinated to metal sites are known for long. The azide ion was found in terminal as well as in bridging (l,l-/r, l,l,l-/r, l,3-/r) coordination geometries. It is well established in the literature that the stability of such compounds decreases with an increase of the covalence of the M-N3 bond and with an increasing M/N3 ratio. Binary systems of the type MtNslx usually decompose under formation of dinitrogen and elemental M. 

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